weak·en

[wee-kuhn]
verb (used with object)
1.
to make weak or weaker.
2.
Phonetics. to change (a speech sound) to an articulation requiring less effort, as from geminate to nongeminate or from stop to fricative.
verb (used without object)
3.
to become weak or weaker.

Origin:
1520–30; weak + -en1

weak·en·er, noun
re·weak·en, verb
un·weak·ened, adjective
un·weak·en·ing, adjective


1, 3. enfeeble, debilitate, enervate, undermine, sap, exhaust, deplete, lessen, diminish, lower, reduce, impair, minimize, invalidate.


1, 3. strengthen.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To weaken
00:10
Weaken is always a great word to know.
So is bilabial. Does it mean:
the audible result of an utterance or portion of an utterance
produced with the lips close together or touching
Collins
World English Dictionary
weaken (ˈwiːkən) [Click for IPA pronunciation guide]
 
vb
to become or cause to become weak or weaker
 
'weakener
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
Fossils weaken the strength of cut stone and many people discard them outright.
But the abrupt arrests of many of them threatened to weaken their challenge.
These holes can be so large that they weaken smaller trees or even cause them
  to break in half.
Perhaps he is hurrying to get the job done before his polls weaken any further.
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