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affect

2
[uh-fekt]
verb (used with object)
  1. to give the appearance of; pretend or feign: to affect knowledge of the situation.
  2. to assume artificially, pretentiously, or for effect: to affect a Southern accent.
  3. to use, wear, or adopt by preference; choose; prefer: the peculiar costume he affected.
  4. to assume the character or attitude of: to affect the freethinker.
  5. (of things) to tend toward habitually or naturally: a substance that affects colloidal form.
  6. (of animals and plants) to occupy or inhabit; live in or on: Lions affect Africa. Moss affects the northern slopes.
  7. Archaic.
    1. to have affection for; fancy.
    2. to aim at; aspire to.
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verb (used without object)
  1. Obsolete. to incline, tend, or favor (usually followed by to): He affects to the old ways.
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Origin of affect

2
1400–50; late Middle English < Middle French affecter < Latin affectāre to strive after, feign (frequentative of afficere to do to), equivalent to af- af- + fec- (see affect1) + -tāre frequentative suffix
Related formsaf·fect·er, noun

Synonyms for affect

1. See pretend.

Usage note

See affect1.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for affecters

affect

1
verb (əˈfɛkt) (tr)
  1. to act upon or influence, esp in an adverse waydamp affected the sparking plugs
  2. to move or disturb emotionally or mentallyher death affected him greatly
  3. (of pain, disease, etc) to attack
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noun (ˈæfɛkt, əˈfɛkt)
  1. psychol the emotion associated with an idea or set of ideasSee also affection
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Word Origin for affect

C17: from Latin affectus, past participle of afficere to act upon, from ad- to + facere to do

affect

2
verb (mainly tr)
  1. to put on an appearance or show of; make a pretence ofto affect ignorance
  2. to imitate or assume, esp pretentiouslyto affect an accent
  3. to have or use by preferenceshe always affects funereal clothing
  4. to adopt the character, manner, etc, ofhe was always affecting the politician
  5. (of plants or animals) to live or grow inpenguins affect an arctic climate
  6. to incline naturally or habitually towardsfalling drops of liquid affect roundness
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Word Origin for affect

C15: from Latin affectāre to strive after, pretend to have; related to afficere to affect 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for affecters

affect

v.1

"to make an impression on," 1630s; earlier "to attack" (c.1600), "act upon, infect" (early 15c.), from affect (n.). Related: Affected; affecting.

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affect

n.

late 14c., "mental state," from Latin noun use of affectus "furnished, supplied, endowed," figuratively "disposed, constituted, inclined," past participle of afficere "to do; treat, use, manage, handle; act on; have influence on, do something to," a verb of broad meaning, from ad- "to" (see ad-) + facere (past participle factus) "do" (see factitious). Perhaps obsolete except in psychology. Related: Affects.

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affect

v.2

"to make a pretense of," 1660s, earlier "to assume the character of (someone)" (1590s); originally in English "to aim at, aspire to, desire" (early 15c.), from Middle French affecter (15c.), from Latin affectare "to strive after, aim at," frequentative of afficere (past participle affectus) "to do something to, act on" (see affect (n.)). Related: Affected; affecting.

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Online Etymology Dictionary, © 2010 Douglas Harper

affecters in Medicine

affect

(ə-fĕkt)
v.
  1. To have an influence on or affect a change in.
  2. To attack or infect, as a disease.
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n.
  1. Feeling or emotion, especially as manifested by facial expression or body language.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.