mid-15c., "youth, young man," from Middle French adolescent (15c.) or directly from Latin adolescentem (nominative adolescens) "growing, near maturity, youthful," present participle of adolescere "grow up, come to maturity, ripen," from ad- "to" (see ad-) + alescere "be nourished," hence, "increase, grow up," inchoative of alere "to nourish" (see old). Adolesce was a back-formed verb used early 20c. by H.G. Wells, G.B. Shaw, Louis MacNeice, but it seems not to have taken. mid-14c., from Old French adopcion or directly from Latin adoptionem (nominative adoptio), noun of action from past participle stem of adoptare "chose for oneself, take by choice, select, adopt," especially "to take into a family, adopt as a child," from ad- "to" (see ad-) + optare "choose, wish, desire" (see option (n.)). late 14c., aouren, "to worship, pay divine honors to, bow down before," from Old French aorer "to adore, worship, praise" (10c.), from Latin adorare "speak to formally, beseech, ask in prayer," in Late Latin "to worship," from ad- "to" (see ad-) + orare "speak formally, pray" (see orator). Meaning "to honor very highly" is attested from 1590s; weakened sense of "to be very fond of" emerged by 1880s. Related: Adored; adoring. late 14c., "to decorate, embellish," also "be an ornament to," from Old French aorner "to order, arrange, dispose, equip; adorn," from Latin adornare "equip, provide, embellish," from ad- "to" (see ad-) + ornare "prepare, furnish, adorn, fit out," from stem of ordo "order" (see order (n.)). The -d- was reinserted by French scribes 14c., in English from late 15c. Related: Adorned; adorning. [make more beautiful or attractive.] "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. late 14c., "contrary, opposing," from Old French avers (13c., Modern French adverse) "antagonistic, unfriendly, contrary, foreign" (as in gent avers "infidel race"), from Latin adversus "turned against, turned toward, fronting, facing," figuratively "hostile, adverse, unfavorable," past participle of advertere, from ad- "to" (see ad-) + vertere "to turn" (see versus). For distinction of use, see see averse. Related: Adversely. [something you are against but you are weaker.] mid-14c., aduersere, from Anglo-French adverser (13c.), Old French adversaire "adversary, opponent, enemy," or directly from Latin adversarius "opponent, adversary, rival," noun use of adjective meaning "opposite, hostile, contrary," literally "turned toward one," from adversus "turned against" (see adverse). The Latin word is glossed in Old English by wiðerbroca. c. 1200, aduersite "misfortune, hardship, difficulty," from Old French aversité "adversity, calamity, misfortune; hostility, wickedness, malice" (Modern French adversité), from Latin adversitatem (nominative adversitas) "opposition," from adversus (see adverse).