object, v. disapprove, [oppose], demur, [contravene], [gainsay], except, [cavil].
object, n. [thing], [article]; [goal], [purpose], [aim], [motive], intent, [design], target, butt, destination, [view].
objection, n. exception, [scruple], demurrer, [cavil]. Antonyms: [approval], acquiescence.
objectionable, a. exceptionable, [offensive], [obnoxious], [undesirable], displeasing.
objectless, a. [aimless], [desultory], purposeless, [vague].
obligation, n. accountableness, [responsibility], incumbency, [duty], [indebtedness]; [agreement], [contract], stipulation, [covenant], [bond].
obligatory, a. [binding], [incumbent], [imperative], coercive. Antonyms: [optional], [discretional].
oblige, v. constrain, obligate; [please], [gratify], [accommodate], [coerce], [compel], necessitate, [force].
obliging, a. complaisant, [gracious], [accommodating], [affable], [debonair], deferential, [yielding].
obliterate, v. [efface], [erase], blot [out], [remove], [destroy], expunge.