toughen

tough +‎ -en

• IPA^(key): /ˈtʌfən/

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• Rhymes: -ʌfən

toughen (third-person singular simple present toughens, present participle toughening, simple past and past participle toughened)

1. (transitive) To make tough.

   (Can we add an example for this sense?)

2. (intransitive) To become tough.

• oughten

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toughen

1. inflection of tough:
   1. strong genitive masculine/neuter singular
   2. weak/mixed genitive/dative all-gender singular
   3. strong/weak/mixed accusative masculine singular
   4. strong dative plural
   5. weak/mixed all-case plural