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worm gear
worm grass
worm lizard
worm’s-eye view
worm snake
worm wheel
wormcast
wormhole
Worms
worms
wormseed
wormwood
wormy
worn
worn-out
worriment
worrisome
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worsen
wors·en [ wúrss'n ] (past and past participle wors·ened, present participle wors·en·ing, 3rd person present singular wors·ens)


transitive and intransitive verb 
Definition:
 
become or make worse: to become worse, or cause something to become worse
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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