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verb (used without object), stag·nat·ed, stag·nat·ing.
  1. to cease to run or flow, as water, air, etc.
  2. to be or become stale or foul from standing, as a pool of water.
  3. to stop developing, growing, progressing, or advancing: My mind is stagnating from too much TV.
  4. to be or become sluggish and dull: When the leading lady left, the show started to stagnate.
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verb (used with object), stag·nat·ed, stag·nat·ing.
  1. to make stagnant.
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Origin of stagnate

1660–70; < Latin stāgnātus (past participle of stāgnāre), equivalent to stāgn(um) pool of standing water + -ātus -ate1
Related formsstag·na·tion, nounstag·na·to·ry [stag-nuh-tawr-ee, -tohr-ee] /ˈstæg nəˌtɔr i, -ˌtoʊr i/, adjectiveun·stag·nat·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

fester, stall, hibernate, languish, decline, decay, stultify, trammel, idle, stand, putrefy, stifle, rot, rust, vegetate, constipate

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British Dictionary definitions for stagnated


  1. (intr) to be or to become stagnant
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Derived Formsstagnation, noun
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 stagnated



1660s (implied in stagnation), from Latin stagnatum, stagnatus, past participle of stagnare "to stagnate," from stagnatum "standing water," from PIE root *stag- "to seep drip" (cf. Greek stazein "to ooze, drip;" see stalactite). Related: Stagnated; stagnating.

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Online Etymology Dictionary, © 2010 Douglas Harper