toughen

[ tuhf-uhn ]
/ ˈtʌf ən /

verb (used with or without object)

to make or become tough or tougher.

Origin of toughen

First recorded in 1575–85; tough + -en1

OTHER WORDS FROM toughen

tough·en·er, noun

Example sentences from the Web for toughen

British Dictionary definitions for toughen

toughen
/ (ˈtʌfən) /

verb

to make or become tough or tougher