noun, verb ·3 syllables ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The process of making something tougher.

Verb

1. 1
   present participle and gerund of toughen form-of, gerund, participle, present

Synonyms

All synonyms

arteriosclerosisatherosclerosisdisciplinefortificationfortifyharden

Antonyms

All antonyms

easinglooseningrelentingsoften