Orwellian.adjective
of, relating to, or evocative of the works of George Orwell (pseudonym of Eric Arthur Blair 1903-1950), especially the satirical book and movie 1984, which depicts a futuristic totalitarian state; Orwell said."He who controls the past controls the future, and he who controls the present, controls the past."
   Orwell was born in Motihari, India, and was educated in England at Eton College. He served with the Indian Imperial Police in Burma (now known as Myanmar) from 1922 to 1927, when he returned to England. In poor health, and striving to become a writer, he lived for several years in poverty, first in Paris and then in London. Out of this experience came his first book, Down and Out in Paris and London (1933), an account of the sordid conditions of the homeless poor. Burmese Days (1934), an indictment of imperialism, is also largely autobiographical. In 1936 Orwell joined the Republican forces in the Spanish Civil War (1936-1939). The description of his experiences, in Homage to Catalonia (1938), forms one of the most moving accounts of this war ever written. Also belonging to this period is The Road to Wigan Pier (1937), a harrowing report on the conditions of unemployed coal miners in the north of England.
   When Orwell resigned from his position in Burma, he resolved to speak out against the domination of any person over another. His condemnation of totalitarian society is expressed in the brilliantly witty allegorical fable Animal Farm (1945) and in the satirical novel Nineteen Eightyfour (1949). The latter presents a terrifying picture of life under the constant surveillance of "Big Brother."
   Among Orwell's other writings, all basically autobiographical, are the novel Keep the Aspidistra Flying (1936); Shooting an Elephant and Other Essays (1950), considered models of expository prose; and Such, Such Were the Joys (1953), recalling the hardships of his school days. The Collected Essays, Journalism and Letters of George Orwell was published in four volumes in 1968. ...Microsoft® Encarta® Encyclopedia 99. © 1993-1998 Microsoft Corporation. All rights reserved.

opportunistic.adjective
taking immediate advantage, often dishonestly, of any circumstance of possible benefit

opportunist.noun
one who takes advantage of any opportunity to achieve an end, often with no regard for principles or consequences
opportunism.noun

opportune.adjective
suited or right for a particular purpose (an opportune place to make camp); occurring at a fitting or advantageous time (an opportune arrival; an opportune moment) 
opportunely.adverb
opportuneness.noun

opportunity.noun,.plural.opportunities
a favorable or advantageous circumstance or combination of circumstances; a favorable or suitable occasion or time; a chance for progress or advancement

ornery, ornerier, orneriest.adjectives
mean spirited, disagreeable, and contrary in disposition; cantankerous
orneriness.noun

onerous.adjective
troublesome or oppressive; burdensome; entailing.obligations that exceed.advantages
onerously.adverb
onerousness.noun

otherwise.adverb
in another way; differently (she thought otherwise); under other circumstances.(otherwise I might have helped); in other respects (an otherwise logical mind)
otherwise.adjective
other than supposed; different (the evidence is otherwise)

obliterate, obliterated, obliterating, obliterates.transitive verbs
to do away with completely so as to leave no trace; abolish; to wipe out, rub off, or erase
obliteration, obliterator.nouns
obliterative.adjective

oppose, opposed, opposing, opposes.verbs
transitive verb use.to be in contention or conflict with; to be resistant to (the ego avoids new ideas if they require effort to implement); to place opposite in contrast or counterbalance
intransitive verb use.to act or be in opposition
opposer.noun

opposition.noun
the act of opposing or resisting; the condition of being in conflict; antagonism
oppositional.adjective

opponent.noun
one that opposes another or others in a battle, contest, controversy, or debate
opponent.adjective
acting against an antagonist or opposing force
opponency.noun

option.noun
the act of choosing; choice; the power or freedom to choose; the exclusive right, usually obtained for a fee, to buy or sell something within a specified time at a set price; something chosen or available as a choice; an item or a feature that may be chosen to replace or enhance standard equipment, as in a car
option, optioned, optioning, options.transitive verbs
to acquire or grant an option on

outset.noun
the beginning; the start; an initial.stage, as of an activity

offset.noun
an agent, an element, or a thing that balances, counteracts, or compensates for something else; one thing set off or developed from something else; the start or initial.stage; the outset; an unintentional or faulty transfer of wet ink from a printed sheet to another surface in contact with it; also called setoff; Offset printing
offset, offset, offsetting, offsets.verbs
transitive verb use.to counterbalance, counteract, or compensate for (fringe benefits designed to offset low salaries)
Printing.-.to cause (printed matter) to transfer or smear on another surface; to produce by offset printing
intransitive verb use.to develop, project, or be situated as an offset
Printing.-.to become marked by or cause an unintentional transfer of ink
offset.adverb.&.adjective

offspring.noun,.plural.offspring
the progeny or descendants of a person, an animal, or a plant considered as a group; a result; a product

obstruct, obstructed, obstructing, obstructs.transitive verbs
to block or fill (a passage) with obstacles or an obstacle; block; to impede, retard, or interfere with; hinder.(obstructed the progress); to get in the way of
obstructer.or.obstructor.noun
obstructive.adjective
obstructively.adverb
obstructiveness.noun
obstruction.noun
one that obstructs; an obstacle; the act or an instance of obstructing; the condition of being obstructed; the act of causing a delay

obstacle.noun
something or someone that opposes, stands in the way of, or holds up progress; an obstruction, bar, barrier, block, hindrance, impediment

officer.noun
one who holds an office of authority in an organization, such as a corporation or government (a police officer {one from the office of the corporation} charged with corporate policy enforcement); one who holds a commission in the armed forces; a person licensed in the merchant marine as master, mate, chief engineer, or assistant engineer

offshoot.noun
something that branches out or derives its existence or origin from a particular source; branch
Botany.-.a lateral.shoot from the main stem of a plant

offish.adjective
inclined to be distant and reserved; aloof
offishly.adverb
offishness.noun

ogre.noun
a person who is felt to be particularly cruel, brutish, or hideous in appearance; a giant or monster in legends and fairy tales that eats human beings
ogreish.adjective