transitive verb
intransitive verb
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Synonyms
beef (up), fortify, harden, strengthen
Antonyms
debilitate, enervate, enfeeble, weaken
Recent Examples on the Web
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'toughen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
1582, in the meaning defined at transitive sense
More Definitions for toughen
toughen
See the full definition for toughen in the English Language Learners Dictionary
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