weakener


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weak·en

 (wē′kən)
tr. & intr.v. weak·ened, weak·en·ing, weak·ens
To make or become weak or weaker.

weak′en·er n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.weakener - that which weakens or causes a loss of strength; "doubt is a great weakener of resolve"
agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Taking Kat Slater away to star in doomed spin-off Redwater was a real weakener for the show's family dynamics.
Korea can serve as a facilitator or a delayer, a weakener or a strengthener, and so on.