as in to strengthen
to increase the ability of (as a muscle) to exert physical force weight lifting will help toughen those flabby muscles of yours

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as in to stiffen
to make more harsh, uncompromising, or severe attempts to toughen conditions under which waivers from military service would be permitted

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Antonyms & Near Antonyms

Thesaurus Entries Near toughen

Cite this Entry

“Toughen.” Thesaurus, Merriam-Webster, Accessed 20 Jul. 2024.

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