What does toughened mean?
Toughened means simple past and past participle of toughen.
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Pronunciation varies by accent · verb
simple past and past participle of toughen.
Two large windows are provided in the front of the cab with a roller type of route indicator between them; both windows and indicator are fitted with ¼-in.-thick toughened plate glass.
Use toughened when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Toughened means simple past and past participle of toughen.
Common synonyms include tough, hardened, tempered, inured.
Possible antonyms include tender, untempered, untoughened, unhardened.
Two large windows are provided in the front of the cab with a roller type of route indicator between them; both windows and indicator are fitted with ¼-in.-thick toughened plate glass.
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