"free from passion, dispassionate," 1620s, from in- (1) "not" + passionate. Related: Impassionately. From 1590s as "strongly affected, stirred by passion," from Italian impassionato, past participle of impassionare (see impassion).
impartible
impassable
impasse
impassible
impassion
impassionate
impassioned
impassive
impassivity
impasto
impatience
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