toughen

POS

Verb (usu participle)

HYPHEN

tough=en

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CIDE DICTIONARY

toughen, v. i. & t.

To grow or make tough, or tougher. [1913 Webster]

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THESAURUS

toughen

acclimate, acclimatize, anneal, be tough, beef up, brace, brace up, buttress, calcify, callous, case harden, confirm, cornify, develop, endure, firm, fortify, fossilize, gird, hang tough, harden, indurate, invigorate, lapidify, lithify, nerve, ossify, petrify, prop, refresh, reinforce, reinvigorate, restrengthen, season, shore up, steel, stiffen, strengthen, support, sustain, temper, undergird, vitrify

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