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English definition of “tough”

tough

adjective [-er/-est only] (STRONG)   /tʌf/
not easily broken, weakened, or defeated; strong: These toys are made of tough plastic. You have to be tough to be successful in politics. The police are getting tougher on illegal parking. Results or actions that are tough are severe and determined: Tough new safety standards for cars are being introduced this week.
(Definition of tough adjective (STRONG) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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