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to toughen
01
to make something stronger
Grammatical Information
Composition
derived
Action verb
Regular
Present tense
toughen
3rd person singular
toughens
Present participle
toughening
Past simple
toughened
Past participle
toughened
Examples
Regular exercise will toughen your muscles and improve your endurance.
02
to make something such as a rule or policy stronger
Transitive
Lexical Tree
toughened
toughen
tough
