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adventure [adventure 词源字典]: adventure: [13] Adventure derives ultimately from a Latin verb meaning ‘arrive’. It originally meant ‘what comes or happens by chance’, hence ‘luck’, but it took a rather pessimistic downturn via ‘risk, danger’ to (in the 14th century) ‘hazardous undertaking’. Its Latin source was advenīre, formed from the prefix adand venīre ‘come’. Its past participle stem, advent-, produced English advent [12] and adventitious [17], but it was its future participle, adventura ‘about to arrive’, which produced adventure.

In the Romance languages in which it subsequently developed (Italian avventura, Spanish aventura, and French aventure, the source of Middle English aventure) the d disappeared, but it was revived in 15th – 16thcentury French in imitation of Latin. The reduced form venture first appears in the 15th century.
=> adventitious, avent, venture[adventure etymology, adventure origin, 英语词源]
advent (n.): "important arrival," 1742, an extended sense of Advent "season before Christmas" (Old English), from Latin adventus "a coming, approach, arrival," in Church Latin "the coming of the Savior," from past participle stem of advenire "arrive, come to," from ad- "to" (see ad-) + venire "to come" (see venue). In English, also sometimes extended to the Pentecost.
Adventist (n.): "one of a religious denomination that believes in or looks for the early second coming of Christ," 1843; see advent + -ist. Church Latin adventus was applied to the coming of the Savior, both the first or the anticipated second, hence Adventist was a name applied to millenarian sects, especially and originally the Millerites (U.S.).
adventitious (adj.): "of the nature of an addition from without," c. 1600, from Medieval Latin adventitius "coming from abroad, extraneous," a corruption of Latin adventicius "foreign, strange, accidental," from advent- past participle stem of advenire "arrive" (see advent). Related: Adventitiously; adventitiousness.
adventure (n.): c. 1200, auenture "that which happens by chance, fortune, luck," from Old French aventure (11c.) "chance, accident, occurrence, event, happening," from Latin adventura (res) "(a thing) about to happen," from adventurus, future participle of advenire "to come to, reach, arrive at," from ad- "to" (see ad-) + venire "to come" (see venue).

Meaning developed through "risk/danger" (a trial of one's chances), c. 1300, and "perilous undertaking" (late 14c.) and thence to "a novel or exciting incident" (1560s). Earlier it also meant "a wonder, a miracle; accounts of marvelous things" (13c.). The -d- was restored 15c.-16c. Venture is a 15c. variant.
adventure (v.): c. 1300, "to risk the loss of," from adventure (n.). Meaning "to take a chance" is early 14c. Related: Adventured; adventuring.
adventurer (n.): late 15c., "one who plays at games of chance," agent noun from adventure (v.). Meaning "one who seeks adventures" is from 1660s.
adventuresome (adj.): 1731, from adventure + -some (1).
adventurous (adj.): mid-14c., "hazardous" (also "occurring by chance," late 14c.), from Old French aventuros "chance, accidental, fortuitous;" of persons, "devoted to adventure" (Modern French aventureux), from aventure (see adventure (n.)). Sense evolution is through "rash, risk-taking" (c. 1400), "daring, fond of adventure" (mid-15c.).
misadventure (n.): late 13c., misaventure, from Old French mesaventure (12c.) "accident, mishap," from mesavenir "to turn out badly;" see mis- (2) + adventure (n.).
peradventure (adv.): 1620s, from Middle English peraventure (mid-15c.), from per auenture (late 13c.), from Old French par aventure (see adventure). Refashioned as though from Latin.
adventive: "That comes from outside or from some external source; extrinsically added; extraneous; foreign", Early 17th cent.; earliest use found in Francis Bacon (1561–1626), lord chancellor, politician, and philosopher. From post-classical Latin adventivus (of a dowry) not derived from parents, of foreign origin from classical Latin advent-, past participial stem of advenīre + -īvus. Compare Middle French, French adventif.