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assistance (n.)[assistance 词源字典]: early 15c., "act of helping or aiding," from Middle French assistance, from assister (see assist (v.)).[assistance etymology, assistance origin, 英语词源]
assistant (n.): mid-15c., assistent "one who helps or aids another," from Middle French assistent, adjective and noun, properly present participle of assister (see assist (v.)).
assistant (adj.): mid-15c., "helpful, of assistance," from Middle French assistent (see assistant (n.)).
assize (n.): "session of a law court," c. 1300 (attested from mid-12c. in Anglo-Latin), from Old French assise "session, sitting of a court" (12c.), properly fem. past participle of asseoir "to cause to sit," from Latin assidere "to sit beside" (see assess). Originally "all legal proceedings of the nature of inquests or recognitions;" hence sessions held periodically in each county of England to administer civil and criminal justice.
associate (v.): mid-15c., from Latin associatus past participle of associare "join with," from ad- "to" (see ad-) + sociare "unite with," from socius "companion" (see social (adj.)). Related: Associated; associating. Earlier form of the verb was associen (late 14c.), from Old French associier "associate (with)."
associate (n.): 1530s, from associate (adj.).
associate (adj.): early 15c., "allied, connected, paired," from Latin associatus, past participle of associare (see associate (v.)).
association (n.): 1530s, "action of coming together," from Medieval Latin associationem (nominative associatio), noun of action from past participle stem of associare (see associate). Meaning "a body of persons with a common purpose" is from 1650s. Meaning "mental connection" is from 1680s; that of "quality or thing called to mind by something else" is from 1810.
associative (adj.): 1812, from associate (v.) + -ive.
assonance (n.): 1727, "resemblance of sounds between words," from French assonance, from assonant, from Latin assonantem (nominative assonans), present participle of assonare "to resound, respond to," from ad- "to" (see ad-) + sonare "to sound" (see sonata). Properly, in prosody, "rhyming of accented vowels, but not consonants" (1823).
assort (v.): late 15c., "to distribute into groups," from Middle French assortir (15c.), from Old French assorter "to assort, match," from a- "to" (see ad-) + sorte "kind" (see sort). Related: Assorted; assorting.
assorted (adj.): "arranged in sorts," 1797, past participle adjective from assort (v.).
assortment (n.): 1610s, "action of assorting," from assort + -ment. Sense of "group of things of the same sort" is attested from 1759; that of "group of things whether the same sort or not" from 1791.
assuage (v.): c. 1300, from Anglo-French assuager, Old French assoagier "soften, moderate, alleviate, calm, soothe, pacify," from Vulgar Latin *adsuaviare, from Latin ad- "to" (see ad-) + suavis "sweet, agreeable" (see sweet (adj.)). For sound development in French, compare deluge from Latin diluvium, abridge from abbreviare. Related: Assuaged; assuaging.
assuasive (adj.): 1708, probably from assume on model of persuasive, etc.
assumable (adj.): 1780 (re-assumable is from 1724), from assume + -able. Related: Assumably; assumability.
assume (v.): early 15c., assumpten "to receive up into heaven" (especially of the Virgin Mary), also assumen "to arrogate," from Latin assumere, adsumere "to take up, take to oneself, take besides, obtain in addition," from ad- "to, up" (see ad-) + sumere "to take," from sub "under" (see sub-) + emere "to take" (see exempt (adj.)).

Meaning "to suppose, to take for granted as the basis of argument" is first recorded 1590s; that of "to take or put on (an appearance, etc.)" is from c. 1600. Related: Assumed; assuming. Early past participle was assumpt. In rhetorical usage, assume expresses what the assumer postulates, often as a confessed hypothesis; presume expresses what the presumer really believes.
assumpsit: legal Latin, "he has taken upon himself," perfect indicative of Latin assumere (see assume).
assumption (n.): c. 1300, "the reception, uncorrupted, of the Virgin Mary into Heaven," also the Church festival (Aug. 15) commemorating this, Feast of the Assumption, from Old French assumpcion and directly from Latin assumptionem (nominative assumptio) "a taking, receiving," noun of action from past participle stem of assumere "take up, take to oneself" (see assume).

Meaning "minor premise of a syllogism" is late 14c. Meaning "appropriation of a right or possession" is mid-15c. Meaning "action of taking for oneself" is recorded from 1580s; that of "something taken for granted" is from 1620s.
assumptive (adj.): early 15c., from Latin assumptivus, from assumpt-, past participle stem of assumere "take up, take to oneself" (see assume) + -ive.