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adjective
Incapable of being apprehended by the mind or the senses
Synonyms: impalpable, imperceptible, imponderable, inappreciable, indiscernible, indistinguishable, intangible, invisible, unnoticeable, unobservable
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adjective
Unconscious
Synonyms: unaware, unconscious, cold, torpid, numb, swooning, gradual, imperceivable, imperceptible, inanimate, senseless, indiscernible, inappreciable, indifferent, insensate, obdurate, oblivious, unfeeling, unimpressible, unintelligible, unmindful, unsusceptible, undetectable
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adjective
Lacking physical feeling or sensitivity
Synonyms: asleep, dead, insensitive, numb, unfeeling
Antonyms: sensible
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adjective
Indifferent
Synonyms: impassive, apathetic, indifferent, detached, incurious, lethargic, unaffected, senseless, unappreciative, listless, phlegmatic, stolid, unconcerned, impervious, uninterested, unresponsive
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adjective
Lacking responsiveness or alertness
Synonyms: benumbed, dull, insensitive, numb, stuporous, torpid, unresponsive, wooden
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adjective
Lacking passion and emotion
Synonyms: anesthetic, bloodless, dull, insensate, insensitive