Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [705]
in·ac·cu·rate adjective : not accurate
Synonyms
erroneous, false, incorrect, inexact, invalid, off, unsound, untrue, wrong—more at FALSE
in·ac·tion noun : not occupied or employed
Synonyms
dormancy, idleness, inactivity, inertness, quiescence; also indolence, languor, lassitude, laziness, lethargy, listlessness, sleepiness, sloth, sluggishness
Antonyms
action, activeness, activity
in·ac·ti·vate verb : to make inactive
— in·ac·ti·va·tion noun
in·ac·tive : not active, energetic, or in use
Synonyms
dull, inert, lethargic, quiescent, sleepy, sluggish, torpid; also apathetic, indolent, languorous, lazy, listless, slothful; dormant, inanimate, motionless, sedentary, static, still; dead; dopey, drugged
Antonyms
active
dead, dormant, fallow, free, idle, inert, inoperative, latent, off, vacant; also arrested, interrupted; asleep, lifeless, quiescent, sleepy; inoperable, unusable, unworkable, useless; dead, dull, slow
Antonyms
active, alive, busy, employed, functioning, on, operating, operative, running, working
in·ac·tiv·i·ty noun : the quality or state of being inactive
Synonyms
dormancy, idleness, inaction, inertness, quiescence—more at INACTION
in·ad·e·qua·cy noun : the quality or state of being inadequate or insufficient
Synonyms
dearth, deficiency, deficit, failure, famine, insufficiency, lack, paucity, poverty, scantiness, scarcity, shortage, want—more at DEFICIENCY
impotence, inability, incapability, incompetence, ineptitude—more at INABILITY
in·ad·e·quate adjective : not adequate : INSUFFICIENT
— in·ad·e·quate·ly adverb
— in·ad·e·quate·ness noun
Synonyms
deficient, insufficient, scarce, short, shy, wanting—more at SHORT
in·ad·ver·tent adjective 1 : HEEDLESS, INATTENTIVE
2 : not intentional : UNINTENTIONAL
— in·ad·ver·tence noun
— in·ad·ver·ten·cy noun
— in·ad·ver·tent·ly adverb
in·alien·able adjective : incapable of being alienated, surrendered, or transferred <~ rights>
— in·alien·abil·i·ty noun
— in·alien·ably adverb
in·amo·ra·ta noun : a woman with whom one is in love
inane adjective inan·er; -est 1 : EMPTY, INSUBSTANTIAL
2 : lacking significance, meaning, or point
inan·i·ty noun 1 : the quality or state of being inane
2 : something that is inane
Synonyms
[1, 2] absurdity, asininity, balminess, craziness, daftness, fatuity, folly, foolishness, insanity, lunacy, madness, silliness, simplicity, zaniness
in·an·i·mate adjective : not animate or animated : lacking the qualities of living things
— in·an·i·mate·ly adverb
— in·an·i·mate·ness noun
in·ap·pre·cia·ble adjective : too small to be perceived
— in·ap·pre·cia·bly adverb
Synonyms
impalpable, imperceptible, indistinguishable—more at IMPERCEPTIBLE
in·ap·pro·pri·ate adjective : not appropriate or in good taste
in·apt adjective 1 : not suitable
2 : inappropriate or incompetent often to an absurd degree : INEPT
— in·apt·ness noun
Synonyms
[1, 2] graceless, improper, incongruous, incorrect, indecorous, inept, infelicitous, unbecoming, unfit, unhappy, unseemly, unsuitable, wrong
in·apt·ly adverb : in an inapt manner
Synonyms
amiss, erroneously, faultily, improperly, incorrectly, mistakenly, wrongly
in·ar·tic·u·late adjective 1 : not understandable as spoken words
2 : incapable of speech esp. under stress of emotion : MUTE
3 : incapable of being expressed by speech; also : UNSPOKEN
4 : not having the power of distinct utterance or effective expression
— in·ar·tic·u·late·ly adverb
Synonyms
dumb, mute, speechless, voiceless—more at MUTE
in·as·much as conjunction : seeing that : SINCE
in·at·ten·tion noun : failure to pay attention : DISREGARD
in·at·ten·tive adjective : not paying attention : not attentive
1inaugural adjective 1 : of or relating to an inauguration
2 : marking a beginning
Synonyms
first, initial, maiden, original, pioneer, premier—more at FIRST
2inaugural noun 1 : an inaugural address
2 : an act of inaugurating : INAUGURATION; especially