8-letter words starting with o
- oblongum — (geometry, archaic) A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis.
- obnounce — (in ancient Rome) to announce an unfavorable omen.
- obscured — (of meaning) not clear or plain; ambiguous, vague, or uncertain: an obscure sentence in the contract.
- obscurer — Comparative form of obscure.
- obscures — Third-person singular simple present indicative form of obscure.
- observed — to see, watch, perceive, or notice: He observed the passersby in the street.
- observee — One who is observed.
- observer — someone or something that observes.
- observes — Third-person singular simple present indicative form of observe.
- obsessed — having an obsession (usually followed by with or by): He is obsessed with eliminating guilt.
- obsesses — to dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally: Suspicion obsessed him.
- obsessor — to dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally: Suspicion obsessed him.
- obsidian — a volcanic glass similar in composition to granite, usually dark but transparent in thin pieces, and having a good conchoidal fracture.
- obsolete — no longer in general use; fallen into disuse: an obsolete expression.
- obstacle — something that obstructs or hinders progress.
- obstante — notwithstanding.
- obstruct — to block or close up with an obstacle; make difficult to pass: Debris obstructed the road.
- obtained — to come into possession of; get, acquire, or procure, as through an effort or by a request: to obtain permission; to obtain a better income.
- obtainer — One who obtains.
- obtected — (obsolete) covered; protected.
- obtemper — to comply (with)
- obtruded — Simple past tense and past participle of obtrude.
- obtruder — One who obtrudes.
- obtrudes — Third-person singular simple present indicative form of obtrude.
- obtunded — to blunt; dull; deaden.
- obturate — to stop up; close.
- obtusely — not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
- obverses — Plural form of obverse.
- obverted — Simple past tense and past participle of obvert.
- obviable — having the ability to be obviated
- obviated — to anticipate and prevent or eliminate (difficulties, disadvantages, etc.) by effective measures; render unnecessary: to obviate the risk of serious injury.
- obviates — Third-person singular simple present indicative form of obviate.
- obviator — a person who obviates
- obvolute — rolled or turned in.
- obwalden — one of the two divisions of the canton of Unterwalden, in central Switzerland. 189 sq. mi. (490 sq. km). Capital: Sarnen.
- ocarinas — Plural form of ocarina.
- occamist — William of, died 1349? English scholastic philosopher.
- occasion — a particular time, especially as marked by certain circumstances or occurrences: They met on three occasions.
- occation — Misspelling of occasion.
- occident — the Occident. the West; the countries of Europe and America. Western Hemisphere.
- occipita — Plural form of occiput.
- occluded — Simple past tense and past participle of occlude.
- occluder — (medicine) an implement designed to temporarily block light to one eye.
- occludes — Third-person singular simple present indicative form of occlude.
- occlusal — the act or state of occluding or the state of being occluded.
- occlusor — a muscle that closes an aperture when it contracts
- occulted — of or relating to magic, astrology, or any system claiming use or knowledge of secret or supernatural powers or agencies.
- occulter — Any object, natural or man-made, that blocks the light of an object from an observer, typically used in reference to astronomical events.
- occultly — In an occult manner.
- occupant — a person, family, group, or organization that lives in, occupies, or has quarters or space in or on something: the occupant of a taxicab; the occupants of the building.