英语词源字典 - 在线词源网站

indebted (adj.)[indebted 词源字典]: late 14c., endetted "owing money," past participle of endetten "to indebt, oblige," from Old French endetter "to involve in debt," from en- "in" (see in- (2)) + dette "debt" (see debt). Figurative sense of "under obligation for favors or services" first attested 1560s. Related: indebt; indebtedness. Latin indebitus meant "not owed, not due."[indebted etymology, indebted origin, 英语词源]
indecency (n.): 1580s, from Latin indecentia "unseemliness, impropriety," noun of quality from indecentem (see indecent).
indecent (adj.): 1560s, "unbecoming, in bad taste," from French indécent (14c.), from Latin indecentem (nominative indecens), from in- "not, opposite of, without" (see in- (1)) + decens (see decent). Sense of "offending against propriety" is from 1610s. Indecent assault (1861) originally covered sexual assaults other than rape or intended rape, but by 1934 it was being used as a euphemism for "rape." Related: Indecently
indecipherable (adj.): 1802, from in- (1) "not" + decipherable (see decipher (v.)). Related: Indecipherability.
indecision (n.): 1763, from French indécision (c. 1600), from in- "not, opposite of, without" (see in- (1)) + decision (see decision).
indecisive (adj.): 1726, from in- (1) "not, opposite of" + decisive. Related: Indecisively; indecisiveness.
indeclinable (adj.): late 14c., originally in grammar, from French indéclinable, from Latin indeclinabilis, from indeclinatus "unchanged, constant," from in- "not, opposite of" (see in- (1)) + declinatus, from declinare (see decline (v.)). Related: Indeclinably.
indecorous (adj.): 1670s, from Latin indecorus "unbecoming, unseemly, unsightly," from in- "not, opposite of, without" (see in- (1)) + decorus "becoming, fitting, seemly, proper" (see decorous). Related: Indecorously; indecorousness.
indeed (adv.): early 14c., in dede "in fact, in truth," from Old English dæd (see deed). Written as two words till c. 1600. As an interjection, 1590s; as an expression of surprise or disgust, 1834. Emphatic form in yes (or no) indeedy attested from 1856, American English.
indefatigability (n.): 1630s, from indefatigable + -ity.
indefatigable (adj.): 1580s (implied in indefatigably), from French indefatigable (15c.), from Latin indefatigabilis "that cannot be wearied," from in- "not" (see in- (1)) + defatigare "to tire out," from de- "utterly, down, away" + fatigare "to weary" (see fatigue). Blount (1656) has defatigable, which was in use in 17c. Modern use (1948) probably is a jocular back-formation from indefatigable.
indefeasible (adj.): 1530s (implied in indefeasibly), from in- (1) "not, opposite of" + defeasible (see defeasance).
indefensible (adj.): 1520s, from in- (1) "not, opposite of" + defensible. Related: Indefensibly.
indefinability (n.): 1814, from indefinable + -ity.
indefinable (adj.): 1810, from in- (1) "not, opposite of" + definable (see define). Related: Indefinably.
indefinite (adj.): early 15c. (implied in indefinitely), from Latin indefinitus, from in- "not, opposite of, without" (see in- (1)) + definitus, past participle of definire (see define).
indefinitely (adv.): early 15c.; see indefinite + -ly (2).
indelible (adj.): 1520s, from Latin indelebilis "indelible, imperishable," from in- "not, opposite of, without" (see in- (1)) + delebilis "able to be destroyed," from delere "destroy, blot out" (see delete). Vowel change from -e- to -i- in English is late 17c. Related: Indelibly.
indelicate (adj.): 1742, "offensive to propriety," from in- (1) "not, opposite of" + delicate. Related: Indelicately.
indemnification (n.): 1732, noun of action from indemnify.