英语词源字典 - 在线词源网站

unlade (v.)[unlade 词源字典]: "remove the cargo from," Old English onhladen; see un- (2) "reverse, opposite of" + lade (v.). Related: Unladen; unlading. [unlade etymology, unlade origin, 英语词源]
unladen (adj.): 1802, past participle adjective from unlade (v.).
unladylike (adj.): 1824, from un- (1) "not" + ladylike.
unlamented (adj.): 1590s, from un- (1) "not" + past participle of lament (v.).
unlatch (v.): 1640s, from un- (2) "reverse, opposite of" + latch (v.).
unlawful (adj.): "contrary to law, illegal," c. 1300, from un- (1) "not" + lawful. Unlawful assembly is recorded in statutes from late 15c. Related: Unlawfully. Old English had a noun unlagu ("unlaw") "illegal action, abuse of law."
unleaded (adj.): 1610s, "having no lead," from un- (1) "not" + leaded (see lead (v.2)). In reference to gasoline, from 1965. In reference to printing, from 1902.
unlearn (v.): mid-15c., from un- (2) "reverse, opposite of" + learn (v.).
unlearned (adj.): c. 1400, "ignorant," from un- (1) "not" + learned (adj.). From 1530s as "not acquired by learning," from past participle of learn (v.). Old English had unlæred.
unleash (v.): 1670s, from un- (2) "reverse, opposite of" + leash (v.). Related: Unleashed; unleashing.
unleavened (adj.): 1520s, from un- (1) "not" + past participle of leaven (v.).
unless (conj.): mid-15c., earlier onlesse, from (not) on lesse (than) "(not) on a less compelling condition (than);" see less. The first syllable originally on, but the negative connotation and the lack of stress changed it to un-. "Except could once be used as a synonym for unless, but the words have now drawn entirely apart" [Century Dictionary].
unlettered (adj.): mid-14c., "not possessed of book-learning," from un- (1) "not" + lettered. An anglicized form of illiterate. Similar formation in Middle Dutch ongelettert.
unlicensed (adj.): 1630s, from un- (1) "not" + past participle of licence (v.).
unlike (adj.): c. 1200, "not resembling," from un- (1) "not" + like (adj.). Similar formation in Old English ungelic, Old Frisian unlik, Old Norse ulikr, Middle Danish ulige, German ungleich.
unlike (adv.): c. 1300, "unevenly," from un- (1) "not" + like (adv.) (see like (adj.)). From 1590s as "in a manner differing."
unlikely (adj.): late 14c., "not likely to occur," from un- (1) "not" + likely (adj.). Similar formation in Old Norse ulikligr, Middle Danish uligelig. Meaning "not likely to be true" is recorded from 1590s. Related: Unlikeliness; unlikelihood.
unlikely (adv.): mid-15c., "improbably," from un- (1) "not" + likely (adv.) (see likely (adj.)).
unlimber (v.): 1760, "to free (a gun) from its limber," usually for the purpose of bringing it into action, from un- (2) "opposite of" + limber "attach a gun to its limber" (see limber (n.)). Figurative sense is attested from 1864. Related: Unlimbered; unlimbering.
unlimited (adj.): mid-15c., from un- (1) "not" + past participle of limit (v.).