Select a letter for some words
Oaten
Consisting of an oat straw or stem; .
Obequitate
To ride about.
obliger
One who, or that which, obliges.
obscurity
The quality or state of being obscure.
observed
perceived with the eyes and sometimes with other senses; .
Obsign
To seal; to confirm, as by a seal or stamp.
Obstreperous
Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.
Occasionally
In an occasional manner; on occasion; at times, as convenience requires or opportunity offers; not regularly.
Occident
The part of the horizon where the sun last appears in the evening; that part of the earth towards the sunset; the west; -- opposed to . Specifically, in former times, Europe as opposed to Asia; now, also, the Western hemisphere.
Occupation
The act or process of occupying or taking possession; actual possession and control; the state of being occupied; a holding or keeping; tenure; use; .
oceanfront
Land bordering an ocean.
Oceanic
Of or pertaining to the ocean; found or formed in or about, or produced by, the ocean; frequenting the ocean, especially mid-ocean.
Ocellated
Resembling an eye.
Octosyllable
Octosyllabic.
Oculinacea
A suborder of corals including many reef-building species, having round, starlike calicles.
Oculo-
A combining form from L. the eye.
Oculonasal
Of or pertaining to the region of the eye and the nose; .
nanthylate
A salt of oenanthylic acid; .
nothionic
Pertaining to an acid now called or .
off-licence
a store that sells alcoholic beverages for consumption elsewhere.
Oilseed
Seed from which oil is expressed, as the castor bean; also, the plant yielding such seed. See .
Oleraceous
Pertaining to pot herbs; of the nature or having the qualities of herbs for cookery; esculent.
Olympiad
A period of four years, by which the ancient Greeks reckoned time, being the interval from one celebration of the Olympic games to another, beginning with the victory of Corbus in the foot race, which took place in the year 776 ; .
Olympian
A god who dwells on Olympus.
Omicron
Lit., the little, or short, O, o; the fifteenth letter of the Greek alphabet.
Omphacine
Of, pertaining to, or expressed from, unripe fruit; .
On-looker
A person who observes an event; a looker-on; a spectator.
Onychophora
Malacopoda.
Ooze
To cause to ooze.
Opaqueness
The state or quality of being impervious to light; opacity.
opencast
same as .
Ophidioid
Of or pertaining to the , a family of fishes which includes many slender species.
Ophiophagus
A genus of venomous East Indian snakes, which feed on other snakes. is said to be the largest and most deadly of poisonous snakes.
Ophiuran
Of or pertaining to the Ophiurioidea.
Opponent
One who opposes; an adversary; an antagonist; a foe.
Oppositely
In a situation to face each other; in an opposite manner or direction; adversely.
Oppositisepalous
Placed in front of a sepal.
Optic
The organ of sight; an eye.
Optimity
The state of being best.
Or
A particle that marks an alternative; . It corresponds to . It often connects a series of words or propositions, presenting a choice of either; .
Oratorical
Of or pertaining to an orator or to oratory; characterized by oratory; rhetorical; becoming to an orator;
Ord
An edge or point; also, a beginning.
Organule
One of the essential cells or elements of an organ. See , under .
Ornitholite
The fossil remains of a bird.
Orphan
To cause to become an orphan; to deprive of parents.
Orthodoxal
Pertaining to, or evincing, orthodoxy; orthodox.
Orthographist
One who spells words correctly; an orthographer.
Orthospermous
Having the seeds straight, as in the fruits of some umbelliferous plants; -- opposed to .
Osage
A tributary of the Missouri River.
Ostriferous
Producing oysters; containing oysters.
Otiose
Being at leisure or ease; unemployed; indolent; idle.
Otological
Of or pertaining to otology.
Oust
See .
Outbalance
To outweight; to exceed in weight or effect.
Outborn
Foreign; not native.
outbreak
A bursting forth; eruption; insurrection; mutiny; revolt.
Outdated
Being out of date; antiquated; outmoded; unfashionable.
Outlook
To face down; to outstare.
Outrage
To be guilty of an outrage; to act outrageously.
Outstreet
A street remote from the center of a town.
Outvie
To exceed in vying.
Outwards
See ,
Ovary
That part of the pistil which contains the seed, and in most flowering plants develops into the fruit. See of .
Overcare
Excessive care.
overdrive
A gearing device which causes the drive shaft of an automobile or other machine to rotate at a speed greater than that of the engine crankshaft.
overdue
Due and more than due; delayed beyond the proper time of arrival, payment, return, etc.;
Overfull
Too full; filled to overflowing; excessively full; surfeited.
Overhale
See .
Overhele
To hele or cover over.
Overhung
Covered over; ornamented with hangings.
Overinform
To inform, fill, or animate, excessively.
Overlie
To lie over or upon; specifically, to suffocate by lying upon; .
Overly
Careless; negligent; inattentive; superfical; not thorough.
Overmast
To furnish (a vessel) with too long or too heavy a mast or masts.
Oversoon
Too soon.
Overstrew
To strew or scatter over.
Overvaluation
Excessive valuation; overestimate.
overwhelmed
same as .
Oxyhydrogen light
A light produced by the incandescence of some substances, esp. lime, in the oxyhydrogen flame. Coal gas (producing the ), or the vapor of ether () or methylated spirit (), may be substituted for hydrogen.
ozonization
Ozonation.
Ozonize
To convert into ozone, as oxygen.