9-letter words starting with o
- o & m — organization and method (in studies of working methods)
- o horizon — the layer of loose leaves and organic debris at the surface of soil.
- o'connell — Daniel, 1775–1847, Irish nationalist leader and orator.
- o'faolain — Seán [shawn] /ʃɔn/ (Show IPA), 1900–91, Irish writer and teacher.
- o'higgins — Ambrosio [ahm-braw-syaw] /ɑmˈbrɔ syɔ/ (Show IPA), (Marqués de Osorno) 1720?–1801, Irish soldier and administrator in South America.
- oak apple — oak gall.
- oak creek — a town in SE Wisconsin.
- oak grove — a small group or orchard of oak trees
- oak ridge — a city in E Tennessee, near Knoxville: atomic research center.
- oakenshaw — an area of woodland containing oak trees
- oarswoman — A female rower, especially as a member of a racing team.
- oarswomen — Plural form of oarswoman.
- oasthouse — Alternative spelling of oast house.
- oat grass — any of several grasses of the genus Arrhenatherum or Danthonia, especially A. elatius, native to Europe, having a purplish-green flowering panicle.
- oathbound — Bound by an oath.
- obamacare — a federal law providing for a fundamental reform of the U.S. healthcare and health insurance system, signed by President Barack Obama in 2010: formally called Affordable Care Act or Patient Protection and Affordable Care Act.
- obbligato — (used as a musical direction) obligatory or indispensable; so important that it cannot be omitted.
- obclavate — inversely clavate.
- obconical — conical, with the attachment at the pointed end.
- obcordate — heart-shaped, with the attachment at the pointed end, as a leaf.
- obcuneate — inversely cuneate.
- obdeltoid — (botany, of leaves) Triangular and attached to the stem via a tip.
- obduction — (obsolete) The act of drawing or laying over, as a covering.
- obedience — the state or quality of being obedient.
- obeisance — a movement of the body expressing deep respect or deferential courtesy, as before a superior; a bow, curtsy, or other similar gesture.
- obeyingly — (rare) obediently.
- obfuscate — to confuse, bewilder, or stupefy.
- obidoxime — An oxime used to treat nerve gas poisoning.
- objectify — to present as an object, especially of sight, touch, or other physical sense; make objective; externalize.
- objecting — anything that is visible or tangible and is relatively stable in form.
- objection — a reason or argument offered in disagreement, opposition, refusal, or disapproval.
- objective — something that one's efforts or actions are intended to attain or accomplish; purpose; goal; target: the objective of a military attack; the objective of a fund-raising drive.
- objectize — To turn into, or treat as, an object; to objectify.
- objectors — Plural form of objector.
- objectory — (programming) An object-oriented methodology mostly created by Ivar Jacobson.
- objectpal — Object-oriented database language, part of Borland's MS-Windows version of Paradox.
- objurgate — to reproach or denounce vehemently; upbraid harshly; berate sharply.
- oblations — Plural form of oblation.
- obligated — to bind or oblige morally or legally: to obligate oneself to purchase a building.
- obligatee — (government) A person who is obligated by law to do something.
- obligates — Third-person singular simple present indicative form of obligate.
- obligator — to bind or oblige morally or legally: to obligate oneself to purchase a building.
- obliquely — in an oblique manner or direction.
- obliquity — the state of being oblique.
- obliviate — To forget, to wipe from existence.
- oblivions — Plural form of oblivion.
- oblivious — unmindful; unconscious; unaware (usually followed by of or to): She was oblivious of his admiration.
- oblongata — medulla oblongata.
- obloquial — having a relation or connection to obloquy
- obnoxious — highly objectionable or offensive; odious: obnoxious behavior.
On this page, we collect all 9-letter words starting with letter O. It’s easy to find right word with a certain length. It is the easiest way to find 9-letter word that beginning with O to use in Scrabble or Crossword puzzles.