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inconsiderate (adj.)[inconsiderate 词源字典]: late 15c., "done thoughtlessly," literally "not properly considered," from Latin inconsideratus "headstrong, unadvised, thoughtless," from in- "not, opposite of" (see in- (1)) + consideratus (see consider). Related: Inconsiderately; inconsiderateness.[inconsiderate etymology, inconsiderate origin, 英语词源]
inconsideration (n.): 1520s, from Late Latin inconsiderationem (nominative inconsideratio) "inconsiderateness," from inconsideratus (see inconsiderate).
inconsistency (n.): 1640s, from in- (1) "not, opposite of" + consistency. Related: Inconsistencies.
inconsistent (adj.): 1640s, "not agreeing in substance or form," from in- (1) "not, opposite of" + consistent. Related: Inconsistently.
inconsolable (adj.): c. 1500 (implied in inconsolably), from Latin inconsolabilis "inconsolable," from in- "not" (see in- (1)) + consolabilis "consolable," from consolari (see console (v.)).
inconspicuous (adj.): 1620s, "invisible," from Late Latin inconspicuus, from in- "not, opposite of, without" (see in- (1)) + Latin conspicuus (see conspicuous). Weakened sense of "not readily seen or noticed" first recorded 1828. Related: Inconspicuously; inconspicuousness.
inconstance (n.): late 14c., from Old French inconstance (13c.), from Latin inconstantia, noun of quality from inconstans (see inconstant).
inconstancy (n.): 1520s, from Latin inconstantia (see inconstance).
inconstant (adj.): c. 1400, "fickle, not steadfast," from Middle French inconstant (late 14c.), from Latin inconstantem (nominative inconstans) "changeable, fickle, capricious," from in- "not, opposite of, without" (see in- (1)) + constantem (see constant). Related: Inconstantly.
incontestable (adj.): 1670s, from French incontestable, from in- "not" (see in- (1)) + contestable (see contest (v.)). Related: Incontestably.
incontinence (n.): late 14c., "inability to restrain sexual desire, sexual immorality," later "inability to keep to a religious rule" (early 15c.), from Old French incontinence "lack of abstinence, unchastity" (12c.) or directly from Latin incontinentia "greediness; incontinence," noun of quality from incontinens "incontinent, immoderate, intemperate" (see incontinent). Meaning "inability to retain bodily functions" is from 1754.
incontinency (n.): early 15c., "unchastity;" see incontinent + -cy.
incontinent (adj.): late 14c., "wanting in self restraint," from Old French incontinent, from Latin incontinentem (nominative incontinens) "incontinent, immoderate, intemperate," from in- "not, opposite of" (see in- (1)) + continens (see continent). Originally chiefly of sexual appetites; sense of "unable to control bowels or bladder" first attested 1828.
incontinently (adv.): early 15c., "immediately, without delay," from incontinent + -ly (2). In reference to physical looseness, from 1550s.
incontrovertible (adj.): 1640s, from in- (1) "not" + controvertible (see controvert). Related: Incontrovertibly.
inconvenience (n.): c. 1400, "harm, damage, danger," also "a harmful incident, misfortune, affliction," from Old French inconvenience "misfortune, calamity; impropriety" (Modern French inconvenance), from Late Latin inconvenientia "lack of consistency, incongruity," noun of quality from inconvenientem (see inconvenient). Later "impropriety, unfitness; an improper act or utterance" (early 15c.). Meaning "quality of being inconvenient" is from 1650s.
inconvenience (v.): 1650s, from inconvenience (n.). Related: Inconvenienced; inconveniencing.
inconveniency (n.): mid-15c., "mischief, injury," from Latin inconvenientia (see inconvenience (n.)). Meaning "trouble, disadvantage" is from 1550s.
inconvenient (adj.): late 14c., "injurious, dangerous," from Old French inconvénient (13c.), from Latin inconvenientem (nominative inconveniens) "unsuitable, not accordant, dissimilar," from in- "not, opposite of" (see in- (1)) + convenientem (see convenient). In early 15c., "inappropriate, unbecoming, unnatural;" also, of an accused person, "unlikely as a culprit, innocent." Sense of "troublesome, awkward" first recorded 1650s.
inconveniently (adv.): mid-15c., "wrongfully," from inconvenient + -ly (2). Meaning "with trouble or discomfort" is from 1650s.