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English definition of “stiffen”

stiffen

verb [I or T] (MORE SEVERE)    /ˈstɪf.ən/
to become or make something stronger or more difficult : These events have stiffened our resolve to succeed . Penalties for selling illegal drugs have been stiffened. Stiffening competition in the market has led to a reduction in the company's profits this year .Becoming and making stronger
(Definition of stiffen verb (MORE SEVERE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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