Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class IV. Words Relating to the Intellectual FacultiesDivision (I) Formation of Ideas
Section I. Operations of Intellect in General
452. [Absence or Want of Thought] Incogitance.
NOUN:INCOGITANCE or incogitancy, vacancy, inunderstanding, vacancy of mind, poverty of intellect [See Imbecility. Folly]; thoughtlessness (inattention) [See Inattention]; inanity, fatuity, vacuity.VERB:NOT THINK [See Thought]; not think of; dismiss from the -mind, – thoughts [See Thought].
indulge in reverie (be inattentive) [See Inattention].
put away thought; unbend -, relax -, divert- the mind; make the mind a blank, let the mind lie fallow.
ADJECTIVE:VACANT, inane, unintellectual, nonunderstanding, unideal, unoccupied, unthinking, incogitant, incogitative, unreasoning, inconsiderate, thoughtless; absent (inattentive) [See Inattention]; diverted; irrational [See Imbecility. Folly]; narrow-minded [See Misjudgment].
UNTHOUGHT OF, undreamt of, unconsidered; off one’s mind; incogitable, inconceivable, not to be thought of.
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