TOUGHEN


Meaning of TOUGHEN in English

v. 25B6; verb

the process toughens the wood fibres : STRENGTHEN, fortify, reinforce, harden, temper, anneal.

measures to toughen up prison discipline : MAKE STRICTER, make more severe, stiffen, tighten up; informal beef up.

Concise Oxford thesaurus English vocabulary.      Краткий оксфордский словарь английского языка тезаурус.