7-Letter Words Starting With O

Here's the list of all the 844 7-Letter Words Starting With O in the English Language.

The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.

Common Words (with Definitions and Examples)
overall
1. involving only main features
2. including everything
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outside
1. relating to or being on or near the outer side or limit
2. located, suited for, or taking place in the open air
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opinion
1. a personal belief or judgment that is not founded on proof or certainty
2. a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof
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outdoor
1. located, suited for, or taking place in the open air
2. pertaining to or concerning the outdoors or outdoor activities
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officer
1. direct or command as an officer
2. any person in the armed services who holds a position of authority or command
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opening
1. an open or empty space in or between things
2. a ceremony accompanying the start of some enterprise
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optical
1. of or relating to or involving light or optics
2. relating to or using sight
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organic
1. relating or belonging to the class of chemical compounds having a carbon basis
2. being or relating to or derived from or having properties characteristic of living organisms
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ordered
1. having a systematic arrangement; especially having elements succeeding in order according to rule
2. disposed or placed in a particular kind of order
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outlook
1. a habitual or characteristic mental attitude that determines how you will interpret and respond to situations
2. belief about (or mental picture of) the future
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operate
1. direct or control; projects, businesses, etc.
2. perform as expected when applied
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ongoing
1. currently happening
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obvious
1. easily perceived and understood
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outcome
1. something that results
2. a phenomenon that follows and is caused by some previous phenomenon
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outline
1. the line that appears to bound an object
2. a sketchy summary of the main points of an argument or theory
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optimal
1. most desirable possible under a restriction expressed or implied
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opposed
1. being in opposition or having an opponent
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offense
1. a lack of politeness; a failure to show regard for others; wounding the feelings of others
2. a feeling of anger caused by being offended
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observe
1. discover or determine the existence, presence, or fact of by perception with the eyes
2. make mention of
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obesity
1. more than average fatness
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optimum
1. most favorable conditions or greatest degree or amount possible under given circumstances
2. most desirable possible under a restriction expressed or implied
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offence
1. the action of attacking an enemy
2. the team that has the ball (or puck) and is trying to score
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odyssey
1. a long wandering and eventful journey
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omitted
1. prevent from being included or considered or accepted
2. leave undone or leave out
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oblique
1. any grammatical case other than the nominative
2. a diagonally arranged abdominal muscle on either side of the torso
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orchard
1. garden consisting of a small cultivated wood without undergrowth
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overlap
1. coincide partially or wholly
2. extend over and cover a part of
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obscure
1. make less visible or unclear
2. make unclear, indistinct, or blurred
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overlay
1. lie upon; lie on top of
2. kill by lying on
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orbital
1. of or relating to an orbit
2. of or relating to the eye socket
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obliged
1. under a moral obligation to do something
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ovarian
1. of or involving the ovaries
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outward
1. relating to physical reality rather than with thoughts or the mind
2. that is going out or leaving
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outback
1. inaccessible and sparsely populated
2. the bush country of the interior of Australia
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oceanic
1. relating to or occurring or living in or frequenting the open ocean
2. resembling the ocean in apparent limitlessness in extent or degree
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oversee
1. watch and direct
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onwards
1. in a forward direction
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outpost
1. a station in a remote or sparsely populated location
2. a settlement on the frontier of civilization
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ottoman
1. thick cushion used as a seat
2. a low seat or a stool to rest the feet of a seated person
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obscene
1. designed to incite to indecency or lust
2. offensive to the mind
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outrage
1. a feeling of righteous anger
2. a wantonly cruel act
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orderly
1. a soldier who serves as an attendant to a superior officer
2. a male hospital attendant who has general duties that do not involve the medical treatment of patients
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overdue
1. past due; not paid at the scheduled time
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octopus
1. tentacles of octopus prepared as food
2. bottom-living cephalopod having a soft oval body with eight long tentacles
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offeror
1. someone who presents something to another for acceptance or rejection
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outsole
1. the outer sole of a shoe or boot that is the bottom of the shoe and makes contact with the ground
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oatmeal
1. porridge made of rolled oats
2. meal made from rolled or ground oats
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omnibus
1. an anthology of articles on a related subject or an anthology of the works of a single author
2. a vehicle carrying many passengers; used for public transport
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opacity
1. the phenomenon of not permitting the passage of electromagnetic radiation
2. incomprehensibility resulting from obscurity of meaning
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oxidase
1. any of the enzymes that catalyze biological oxidation
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offbeat
1. an unaccented beat (especially the last beat of a measure)
2. (informal) strikingly unconventional
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oneness
1. the quality of being united into one
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outflow
1. the discharge of a fluid from some container
2. the process of flowing out
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ostrich
1. a person who refuses to face reality or recognize the truth (a reference to the popular notion that the ostrich hides from danger by burying its head in the sand)
2. fast-running African flightless bird with two-toed feet; largest living bird
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operand
1. a quantity upon which a mathematical operation is performed
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ovation
1. enthusiastic recognition (especially one accompanied by loud applause)
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origami
1. the Japanese art of folding paper into shapes representing objects (e.g., flowers or birds)
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orbiter
1. man-made equipment that orbits around the earth or the moon
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overrun
1. invade in great numbers
2. occupy in large numbers or live on a host
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ominous
1. threatening or foreshadowing evil or tragic developments
2. presaging ill fortune
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osmosis
1. (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
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onstage
1. situated or taking place on the area of a stage visible to the audience
2. on the stage
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onshore
1. (of winds) coming from the sea toward the land
2. on the edge of the land
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oregano
1. aromatic Eurasian perennial
2. pungent leaves used as seasoning with meats and fowl and in stews and soups and omelets
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organza
1. a fabric made of silk or a silklike fabric that resembles organdy
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ordinal
1. of or relating to a taxonomic order
2. being or denoting a numerical order in a series
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outcast
1. a person who is rejected (from society or home)
2. excluded from a society
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orifice
1. an aperture or hole that opens into a bodily cavity
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octagon
1. an eight-sided polygon
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overuse
1. make use of too often or too extensively
2. exploitation to the point of diminishing returns
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onerous
1. not easily borne; wearing
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ocarina
1. egg-shaped terracotta wind instrument with a mouthpiece and finger holes
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overtly
1. in an overt manner
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oversaw
1. watch and direct
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opulent
1. ostentatiously rich and superior in quality
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outlier
1. a person who lives away from his place of work
2. an extreme deviation from the mean
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onetime
1. belonging to some prior time
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outfall
1. the outlet of a river or drain or other source of water
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obelisk
1. a stone pillar having a rectangular cross section tapering towards a pyramidal top
2. a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used
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oxidant
1. a substance that oxidizes another substance
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osmotic
1. of or relating to osmosis
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oddball
1. a person with an unusual or odd personality
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omicron
1. the 15th letter of the Greek alphabet
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oratory
1. addressing an audience formally (usually a long and rhetorical address and often pompous)
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oilseed
1. any of several seeds that yield oil
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offside
1. (sport) the mistake of occupying an illegal position on the playing field (in football, soccer, ice hockey, field hockey, etc.)
2. illegally beyond a prescribed line or area or ahead of the ball or puck
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obverse
1. the more conspicuous of two alternatives or cases or sides
2. the side of a coin or medal bearing the principal stamp or design
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olivine
1. a mineral consisting of magnesium iron silicate; a source of magnesium
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outcrop
1. the part of a rock formation that appears above the surface of the surrounding land
2. appear on the surface, come to the surface on the ground
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ouguiya
1. the basic unit of money in Mauritania
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outturn
1. what is produced in a given time period
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oxalate
1. a salt or ester of oxalic acid
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offload
1. transfer to a peripheral device, of computer data
2. remove the load from (a container or vehicle)
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oppress
1. come down on or keep down by unjust use of one's authority
2. cause to suffer
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oversea
1. being or passing over or across the sea
2. beyond or across the sea
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opossum
1. small furry Australian arboreal marsupials having long usually prehensile tails
2. nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America
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outdraw
1. draw a gun faster, or best someone in a gunfight
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outdone
1. be or do something to a greater degree
2. get the better of
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oration
1. an instance of oratory
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outsell
1. be sold more often than other, similar products
2. sell more than others
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outcall
1. make a higher bid than (the previous bid or player); in a card game
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outlast
1. live longer than
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offhand
1. with little or no preparation or forethought
2. casually thoughtless or inconsiderate
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outgrow
1. grow too large or too mature for
2. grow faster than
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obviate
1. get rid of something
2. prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off
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organon
1. a system of principles for philosophic or scientific investigations; an instrument for acquiring knowledge
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outpace
1. surpass in speed
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overage
1. a surplus or excess of money or merchandise that is actually on hand and that exceeds expectations
2. too old to be useful
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operant
1. having influence or producing an effect
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ousting
1. the act of ejecting someone or forcing them out
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outlive
1. live longer than
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oxidize
1. enter into a combination with oxygen or become converted into an oxide
2. add oxygen to or combine with oxygen
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7-Letter Words Starting With O