Origin: 1350–1400; Middle English <
Latin affectus acted upon, subjected to; mental or emotional state (past participle and action noun of
afficere), equivalent to
af- af- +
fec- (combining form of
facere to make, do) +
-tus action noun suffix or
-tus past participle suffix
Related formsaf·fect·a·ble, adjective
af·fect·a·bil·i·ty, noun
Synonyms
1. influence, sway; modify, alter. 2. touch, stir.
Usage note Affect1 and
effect, each both noun and verb, share the sense of “influence,” and because of their similarity in pronunciation are sometimes confused in writing. As a verb
affect1 means “to act on” or “to move” (
His words affected the crowd so deeply that many wept);
affect2 means “to pretend” or “to assume” (
new students affecting a nonchalance they didn't feel). The verb
effect means “to bring about, accomplish”:
Her administration effected radical changes. EXPANDThe noun effect means “result, consequence”: the serious effects of the oil spill. The noun affect1 pronounced with the stress on the first syllable, is a technical term in psychology and psychiatry. Affect2 is not used as a noun
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