Crossword Clues Starting with O

289 crossword clues, each with the answer plus links to play the puzzles they appear in.

“One of the four groups students are sorted into”

HOUSE (5)

“Oval path used for running races”

TRACK (5)

“Optical instrument designed to make distant objects appear nearer”

TELESCOPE (9)

“Organ used for sight”

EYE (3)

“Orchestral introduction to an opera or ballet”

OVERTURE (8)

“Order of mammals including lemurs monkeys and apes”

PRIMATE (7)

“Order given on a film set”

CUT (3)

“Organism that breaks down dead plants and animals”

DECOMPOSER (10)

“One half of the earth usually divided by the equator”

HEMISPHERE (10)

“Object producing a magnetic field”

MAGNET (6)

“One of the four markers on the diamond”

BASE (4)

“One of the five gospel singers in Hercules”

MUSE (4)

“Offspring of a human and an angel”

NEPHILIM (8)

“Online journal”

BLOG (4)

“Old-school film stock material”

CELLULOID (9)

“Online scam to obtain personal info”

PHISHING (8)

“Oingo Boingo begged for this action on a 1985 track”

STAY (4)

“Outdoor activities done for enjoyment when visiting public lands”

RECREATION (10)

“Organ protected by immune cells in the chest”

LUNG (4)

“OpenAI's platform for AI agents, responding to a competitor's offering.”

FRONTIER (8)

“One full circuit of the track”

LAP (3)

“One of several cog options selected to keep the engine screaming in its happy place?”

GEAR (4)

“One complete circuit of the racing track”

LAP (3)

“Opposite of female, often describing many early directors”

MALE (4)

“Ordinary written or spoken language without meter”

PROSE (5)

“Object launched into space to orbit Earth or another celestial body”

SATELLITE (9)

“One of three bags a runner must safely touch.”

BASE (4)

“Overly protective and possessive male lead”

ALPHA (5)

“Oscar-winning screenwriter who shares a famous Boston bromance with Affleck.”

MATT (4)

“Object of a fandom's absolute devotion”

IDOL (4)

“One complete circuit of the race track”

LAP (3)

“Official authorization needed for overnight backcountry stays”

PERMIT (6)

“One who performs on stage or screen”

ACTOR (5)

“Ordinary written or spoken language without metrical structure”

PROSE (5)

“Online storage for files instead of a local drive”

CLOUD (5)

“Opening in the crust where steam or gas escapes”

VENT (4)

“Orange-haired cartographer of the Straw Hat crew”

NAMI (4)

“Organism that gets energy by eating other organisms”

CONSUMER (8)

“One who fights against authority”

REBEL (5)

“Old Faithful is a famous example of this erupting hot spring”

GEYSER (6)

“One who avoids anything with a face or a mother”

VEGAN (5)

“One of the nine divisions of a game”

INNING (6)

“Orbit type featured in the upcoming Fram2 crewed flight”

POLAR (5)

“Organ that filters waste from the blood to make urine”

KIDNEY (6)

“One who ranges, perhaps, or a guardian of the wild.”

RANGER (6)

“Ornamental headdress worn by a reigning sovereign”

CROWN (5)

“Orchard fruit featured in a chunky, spiced fritter”

APPLE (5)

“Older and respected member of a family”

ELDER (5)

“Official who enforces rules”

REFEREE (7)

“One cycle of improving a model through repeated training”

ITERATION (9)

“Obscure name for a group of burrowing badgers”

CETE (4)

“Outfielder Jahmai who serves as a versatile bench piece and energy guy”

JONES (5)

“One of the three timed segments that make up a full lap”

SECTOR (6)

“Oil found in shark livers used in some cosmetics”

SQUALENE (8)

“Of Akhaten where an infinite leaves memory song feeds an elder space deity”

SNOWS (5)

“Optical instrument used to observe distant galaxies”

TELESCOPE (9)

“Offensive lineman protecting the interior”

GUARD (5)

“Of Blood hunts a fugitive schoolteacher named John hiding his true nature in 1913”

FAMILY (6)

“One who writes music”

COMPOSER (8)

“One leaf or side of paper inside a book”

PAGE (4)

“One of the two people needed to run the machine”

PILOT (5)

“Oscar-winning composer Göransson returning for the movie”

LUDWIG (6)

“Open to or shared by all the people in an area”

PUBLIC (6)

“One of three twenty-minute segments in a regulation matchup”

PERIOD (6)

“One of eight equal parts”

EIGHTH (6)

“Outline or form of an object”

SHAPE (5)

“Overzealous supporter named after an Eminem song”

STAN (4)

“Occurring near the end of a period of time”

LATE (4)

“Orthodox resting place that never yielded a royal mummy at Giza”

TOMB (4)

“One level in a series of stages”

STEP (4)

“Original source of energy for nearly all food chains”

SUN (3)

“One of three equal parts”

THIRD (5)

“Orange-fleshed tropical breakfast staple containing peppery black seeds.”

PAPAYA (6)

“Object that chooses a student's house”

HAT (3)

“One who is among the first to explore a new field”

PIONEER (7)

“Orbital device for communication or observation”

SATELLITE (9)

“Organism, like a plant, that makes its own energy from sunlight”

PRODUCER (8)

“One 'chrome' is out for single color work.”

MONOCHROME (10)

“OpenAI's CEO, Sam ______.”

ALTMAN (6)

“Obsessive warlord bent on balancing all universal populations with six gems”

THANOS (6)

“Of the highest quality or excellence”

BEST (4)

“Opposable digit on the hand”

THUMB (5)

“Object that produces a magnetic field”

MAGNET (6)

“Optimally indivisible, like Amazon or stubborn integers”

PRIME (5)

“Open-air stage dedicated to extended electronic music sets.”

QUASAR (6)

“Opening ceremony procession”

PARADE (6)

“One who keeps a head for business”

MILLINER (8)

“One of the five digits on the foot”

TOE (3)

“Optical tool for viewing tiny organisms”

MICROSCOPE (10)

“Official who enforces the rules during a game”

REFEREE (7)

“Orange taproot favored by Bugs Bunny”

CARROT (6)

“Operating system for desktops and laptops.”

MACOS (5)

“One product found during a multi step calculation, as in ___ products”

PARTIAL (7)

“One for you, nineteen for him”

TAXMAN (6)

“One of several distinct personality states in a single individual”

ALTER (5)

“One who catches, or a 'fresh' start to a sea tale.”

FISHER (6)

“Our local star, currently suffering from a dimming crisis.”

SUN (3)

“One of a thousand equal parts of a whole”

THOUSANDTH (10)

“One of three ladies who determine your thread count”

NORN (4)

“One of four essential dietary cornerstones, non-caned variety”

CANDY (5)

“Official who presides over a court and decides legal cases”

JUDGE (5)

“One of the earliest video games featuring two paddles and a dot”

PONG (4)

“One who observes the world from the outside”

WATCHER (7)

“Ordinary written or spoken language without poetic meter”

PROSE (5)

“Ohio city that traditionally hosts the "First Four" games.”

DAYTON (6)

“Organ whose lateralization is often studied in relation to handedness.”

BRAIN (5)

“Offensive foul against a defender”

CHARGE (6)

“Object orbiting a planet or star”

SATELLITE (9)

“Online auction website founded in 1995 where a broken laser pointer was famously the first item sold”

EBAY (4)

“One of the four corners a runner must touch”

BASE (4)

“Orienteering tool for a lost hiker”

COMPASS (7)

“One of the primordial giants who ruled before the Olympian uprising”

TITAN (5)

“Ornate summit topper Buddy lunged across the living room to mount”

STAR (4)

“One's initial feeling of a French movement.”

IMPRESSION (10)

“Octet of ocular beads watching for vibration”

EYES (4)

“One of the five colored interlocking circles on the official flag”

RING (4)

“"Operation ___", London hit musical crossing the pond in 2026.”

MINCEMEAT (9)

“One who searches through planetary wreckage for valuable scrap metal”

SCAVENGER (9)

“Orange squash chosen from the vine for doorstep illumination”

PUMPKIN (7)

“Of a medieval land system”

FEUDAL (6)

“Organ that controls the body”

BRAIN (5)

“Opening presentation that sets the tone for the week's announcements.”

KEYNOTE (7)

“Official park guide often seen in a flat hat”

RANGER (6)

“Open, grassy plain ecosystem”

SAVANNA (7)

“Often a time for phone calls”

COMMUTE (7)

“One level of processing within a deep learning architecture”

LAYER (5)

“Outdoor area where many community festivals are held”

PARK (4)

“One of the elder gods”

TITAN (5)

“Objects used by actors on stage”

PROPS (5)

“Orchestral piece at the beginning of an opera”

OVERTURE (8)

“Overhead stroke that puts the ball into play.”

SERVE (5)

“Organism that must eat other living things for energy”

CONSUMER (8)

“One flat sheet of material stacked with others”

LAYER (5)

“Operating system that powers the company's flagship smartphones”

IOS (3)

“Offsite network infrastructure where enterprise assets reside”

CLOUD (5)

“Outfield prospect Wilyer Abreu's favorite veteran Red Sox center fielder”

CRISP (5)

“One of ten equal parts”

TENTH (5)

“One who measures the mountain in vertical feet”

HIKER (5)

“One of ten equal parts of a whole”

TENTH (5)

“Overstepping delivery granting a free gift to the batter”

NOBALL (6)

“Object that can pull certain metals toward itself”

MAGNET (6)

“Objects used by actors during a performance”

PROPS (5)

“Official exhibition sponsored by the French Académie des Beaux-Arts”

SALON (5)

“Organ used for breathing”

LUNG (4)

“One-over tiebreaker used to decide drawn matches”

SUPEROVER (9)

“Oscillation that transfers energy”

WAVE (4)

“One of a hundred equal parts of a whole”

HUNDREDTH (9)

“One of the ancient immortal blue beings overseeing the galactic peacekeepers”

GUARDIAN (8)

“Opposite of an acid”

BASE (4)

“Organized group of soldiers who fight together”

ARMY (4)

“One half of the colors officially named national in April”

GREEN (5)

“One who enjoys books and stories.”

READER (6)

“One might hear a frequent re"mind"er about this”

GAP (3)

“Organic micronutrient named with letters like A, C, D, and K”

VITAMIN (7)

“Overall structural shape or outline of an ensemble”

SILHOUETTE (10)

“Outer layer of excitement for a lemon”

ZEST (4)

“Organ that filters waste from the blood”

KIDNEY (6)

“Original background music composed specifically for a movie”

SCORE (5)

“Official who enforces rules on the playing field”

REFEREE (7)

“One side of a leaf of paper in a book”

PAGE (4)

“One who might be accused of making a scene, or at least a collection”

CURATOR (7)

“One of the uprights on the scoring frame”

POST (4)

“Overwhelming a server with traffic from multiple sources”

DDOS (4)

“Ordinary speech without meter's tight corset”

PROSE (5)

“Objects used on stage by the performers”

PROPS (5)

“Off-spinner's tricky delivery that turns the other way”

DOOSRA (6)

“Opaque sibling of a watery medium”

GOUACHE (7)

“One of the brightly colored outer parts of a flower”

PETAL (5)

“Organelle known as the powerhouse that generates cellular energy”

MITOCHONDRIA (12)

“Of Saint John where humans are uploaded into a Wi-Fi server network at the Shard”

BELLS (5)

“Organic rot, or the gradual reduction of learning rates over time”

DECAY (5)

“Original silent editor commanded to manipulate space and time on screen”

BARRY (5)

“Ocean bordering Africa, southern Asia, and Australia”

INDIAN (6)

“Of, relating to, or resembling sheep”

OVINE (5)

“One of many in a metaphorical barrier mentioned in a famous anthem”

BRICK (5)

“One of the five senses, surprisingly keen even in dark water”

SIGHT (5)

“Organic molecule group including fats, waxes, and sterols”

LIPID (5)

“Offer strong resistance, or endure a harsh storm”

WITHSTAND (9)

“Orange-clad ninja who loves ramen and dreams of becoming Hokage”

NARUTO (6)

“One-eyed giant from Greek myth”

CYCLOPS (7)

“Officer whose whole career revolves around hunting down dark-hearted moonlighters?”

AUROR (5)

“Outer protective layer of cells on a leaf”

EPIDERMIS (9)

“One who performs equivalent exchange to transmute matter”

ALCHEMIST (9)

“Old Viking tongue”

NORSE (5)

“Out-and-out center forward tasked primarily with scoring goals”

STRIKER (7)

“Objects used on stage by actors”

PROPS (5)

“Older device that mixes air and fuel for combustion”

CARBURETOR (10)

“Open-faced baked dish that pastry chefs strive to keep from developing a soggy bottom.”

TART (4)

“One leading a wilderness tour”

GUIDE (5)

“Odin's condition for possessing the power of Thor”

WORTHY (6)

“One half of a feathered surveillance team focused on thought”

HUGINN (6)

“Official status granted to the occasion nationwide in 2021”

HOLIDAY (7)

“Outspoken star looking to put the Tribal Chief to sleep in the main event.”

PUNK (4)

“Organelle that stores a cell's genetic material”

NUCLEUS (7)

“On the ____ is the electronic instrumental track on Dark Side”

RUN (3)

“Opening named after a country in the United Kingdom”

SCOTCH (6)

“Old-school term for someone who hacks telecommunication systems”

PHREAK (6)

“One who gains unauthorized access to computer systems”

HACKER (6)

“Official who examines buildings or products to check they meet safety rules”

INSPECTOR (9)

“On-set physical rig used to portray the rocky sidekick in the movie.”

PUPPET (6)

“One circuit of the track”

LAP (3)

“Organisms that live on or near the ocean floor”

BENTHOS (7)

“One who guides the action, often with more credit.”

DIRECTOR (8)

“Officially bar a rule-breaking user from an online platform”

BAN (3)

“Out-of-fashion pet often misplaced by Neville”

TOAD (4)

“One of the nine sisters who inspire the arts”

MUSE (4)

“Official paper”

DOCUMENT (8)

“One who creates software”

DEVELOPER (9)

“Organization that expanded the 2026 tournament to 48 teams”

FIFA (4)

“Outfielder Wilyer who emerged as a gold glove caliber right fielder in 2024”

ABREU (5)

“One's blood relatives”

KIN (3)

“One side of a sheet of paper in a volume”

PAGE (4)

“Over 280 of these head coverings were retrieved from Yellowstone's hydrothermal vents in summer 2026”

HATS (4)

“Outermost electrons responsible for dictating chemical reactivity”

VALENCE (7)

“One who discovers new lands”

EXPLORER (8)

“Otis gave this invention its ups and downs”

ELEVATOR (8)

“One-handed justice dealer whose pledge proved costly to Fenrir”

TYR (3)

“One of the four major championships, with the US Open being the final one.”

SLAM (4)

“One side of a sheet of paper in a collection of sheets”

PAGE (4)

“Ocean that separates North America from Europe and Africa”

ATLANTIC (8)

“Orange-skied cradle of temporal mastery, frozen in a pocket painting called No More”

GALLIFREY (9)

“Organized criminal crew of the underworld”

GANG (4)

“Ocean's movement, also a greeting.”

WAVE (4)

“Official who enforces the rules”

UMPIRE (6)

“Object surrounded by an invisible field that attracts iron and steel”

MAGNET (6)

“One of 100 on the painted field”

YARD (4)

“One version of a trait found in a pair”

ALLELE (6)

“Organ that pumps blood through the body”

HEART (5)

“Organ where food is digested”

STOMACH (7)

“Organism that feeds on dead organic matter and waste”

DETRITIVORE (11)

“Oval object traditionally boiled and dipped in vibrant hues”

EGG (3)

“Old-school methodology favoring practical physical effects over CGI”

ANALOGUE (8)

“Order of peacekeepers, like the Ninth one featured in an upcoming Visions series.”

JEDI (4)

“Ocean surrounding Antarctica, recognized as Earth's fifth ocean”

SOUTHERN (8)

“One of two small pieces of wood resting atop the stumps”

BAIL (4)

“Official bus service transporting fans from local hotels to the grounds”

SHUTTLE (7)

“Organ where digestion begins”

STOMACH (7)

“One of several attempts at a single shot”

TAKE (4)

“One of the three vertical wooden posts behind the batsman”

STUMP (5)

“One of two equal parts”

HALF (4)

“One of the older generation of Greek deities preceding the Olympians”

TITAN (5)

“One who has a great liking for a specific thing”

LOVER (5)

“On X, a nerve fiber extension.”

AXON (4)

“Often decorated with seashells or sunglasses for this holiday.”

TREE (4)

“One of the two ends of a magnet where its pull is strongest”

POLE (4)

“Opposing force a machine must overcome to do work”

RESISTANCE (10)

“Official, respectful term used by broadcasters instead of 'fans.'”

PATRONS (7)

“Overweight slug who really should have invested in better security?”

JABBA (5)

“One's family and relations collectively”

KIN (3) · KINDRED (7)

“Orchestral introduction to an opera”

OVERTURE (8)

“Orb enabling visual perception”

EYE (3)

“Old hermit who told a lie from a certain point of view”

KENOBI (6)

“One of the four sovereign rulers dominating the New World”

EMPEROR (7)

“Organism that breaks down dead plants and animals into nutrients”

DECOMPOSER (10)

“Official who throws yellow flags”

REFEREE (7)

“Olympic beverage that keeps wrinkles and morgues away”

NECTAR (6)

“Once beautiful maiden with a gaze that turns to stone”

MEDUSA (6)

“Outer cellular boundary mediating liquid exchange with surroundings”

EPIDERMIS (9)

“One of four equal parts”

FOURTH (6)

“One of the twins in 'Sister, Sister'”

TIA (3)

“Overworked turn of phrase or plot device”

TROPE (5)

“Official credential flashed for security clearance”

BADGE (5)

“Obligatory almsgiving to help the needy”

ZAKAT (5)

“Olaf's supposed profession despite his lack of talent”

ACTOR (5)

“Opportunistic Northerner who packed cheap luggage to exploit the post-war South”

CARPETBAGGER (12)

“Official who makes calls on the field”

UMPIRE (6)

“Odorous mountain brute incapacitated by its own upended club”

TROLL (5)

“One of Earth's seven major landmasses”

CONTINENT (9)

“One of several sheets or levels of material”

LAYER (5)

“One of the twelve primary followers of Jesus”

PETER (5)

“Organ used for hearing”

EAR (3)

“Outdoor meal on a blanket”

PICNIC (6)

“Ontario host city featuring BMO Field”

TORONTO (7)

“One of India's official languages”

HINDI (5)

“One thousand birds chirping in a hand of lightning”

CHIDORI (7)

“Of the Middle Ages”

MEDIEVAL (8)

“One side of a sheet of paper in a book”

PAGE (4)

“One of the official languages of India”

HINDI (5)

“One of nine frames in a standard baseball contest”

INNING (6)

“One who plans the form or structure of something”

DESIGNER (8)

“One of four periods in a game”

QUARTER (7)

“Over-the-shoulder safety restraint on intense rides”

HARNESS (7)

“Outrageous or amusing behavior that might get you sent to the principal's office.”

ANTICS (6)

“One's righteous duty or the cosmic order of things”

DHARMA (6)

“Offensive foul for running into a defender”

CHARGE (6)

“One of the Greek goddesses of the arts”

MUSA (4)

“On-field official who signals boundaries, wickets, and extras”

UMPIRE (6)

“Obstacle that turns a winner into a groan.”

NET (3)

“One-eyed Allfather who sacrificed his vision for wisdom”

ODIN (4)

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