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WordNet-OnlineFree dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
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Noun stiffening has 2 senses
stiffening - the act of becoming stiff; "stiffening his shoulders, he prepared to advance"--1 is a kind of procedure, process
 
stiffening, rigidifying, rigidification - the process of becoming stiff or rigid--2 is a kind of natural process, natural action, action, activity
 --2 has particulars: rigor mortis
 
 
Verb stiffen has 3 senses
stiffen - become stiff or stiffer; "He stiffened when he saw his boss enter the room"--1 is one way to change
 Antonyms:  loosen, relax, loose
 Sample sentences:
 Something ----s
 Somebody ----s
 
stiffen - make stiff or stiffer; "Stiffen the cream by adding gelatine"--2 is one way to change, alter, modify
 Antonyms:  loosen, loose
 Sample sentences:
 Somebody ----s something
 Something ----s something
 
stiffen, tighten, tighten up, constrain - restrict; "Tighten the rules"; "stiffen the regulations"--3 is one way to restrict, restrain, trammel, limit, bound, confine, throttle
 Sample sentence:
 Somebody ----s something
 
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