英语词源字典 - 在线词源网站

effable (adj.)[effable 词源字典]: "that may be (lawfully) expressed in words," 1630s, from French effable or directly, from Latin effabilis "utterable," from effari "to utter" (see ineffable). Now obsolete or archaic.[effable etymology, effable origin, 英语词源]
lawful (adj.): c. 1300, laghful; see law + -ful. Similar construction in Old Norse logfullr. Related: Lawfully; lawfulness.
legitimate (adj.): mid-15c., "lawfully begotten," from Middle French legitimer and directly from Medieval Latin legitimatus, past participle of legitimare "make lawful, declare to be lawful," from Latin legitimus "lawful," originally "fixed by law, in line with the law," from lex (genitive legis) "law" (see legal). Transferred sense of "genuine, real" is attested from 1550s. Related: Legitimately.
suborn (v.): "to procure unlawfully, to bribe to accomplish a wicked purpose, especially to induce a witness to perjury, "to lure (someone) to commit a crime," 1530s, from Middle French suborner "seduce, instigate, bribe" (13c.) and directly from Latin subornare "employ as a secret agent, incite secretly," originally "equip, fit out, furnish," from sub "under, secretly" (see sub-) + ornare "equip," related to ordo "order" (see order (n.)). Related: Suborned; suborning.
trespass (v.): c. 1300, "transgress in some active manner, commit an aggressive offense, to sin," from Old French trespasser "pass beyond or across, cross, traverse; infringe, violate," from tres- "beyond" (from Latin trans-; see trans-) + passer "go by, pass" (see pass (v.)). Meaning "enter unlawfully" is first attested in forest laws of Scottish Parliament (c. 1455). The Modern French descendant of Old French trespasser, trépasser, has come to be used euphemistically for "to die" (compare euphemistic use of cross over, and obituary). Related: Trespassed; trespassing.
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."
usurp (v.): early 14c., from Old French usurper "to (wrongfully) appropriate" (14c.), from Latin usurpare "make use of, seize for use," in later Latin "to assume unlawfully, trespass on," from usus "a use" (see use (v.)) + rapere "to seize" (see rapid (adj.)). Related: Usurped; usurping.
jaywalk: "Cross or walk in the street or road unlawfully or without regard for approaching traffic", Early 20th century: from jay in the colloquial sense 'silly person' + walk. More The ‘jay’ in the word is the same as the bird, which has been used colloquially to mean ‘silly person’.