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Definition of Toughen
1. Verb. Make tough or tougher. "This experience will toughen her"
Definition of Toughen
1. v. i. & t. To grow or make tough, or tougher.
Definition of Toughen
1. to make tough [v -ED, -ING, -S] - See also: tough
Lexicographical Neighbors of Toughen
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