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toughen

tough·en

toughen

 
pronunciation:
tuh fn
features:
Word Combinations (verb)
part of speech: transitive verb & intransitive verb
inflections: toughened, toughening, toughens
definition: to make, be, or become tough or tougher.
antonyms:
soften, tenderize, weaken
Word CombinationsSubscriber feature About this feature
derivation: toughener (n.)