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Swear

/sweə/

To make a solemn promise often involving a deity or to use offensive language or curses.

Synonyms:

This word has no antonyms

I swear I didn't do it.He swears like a sailor when he's angry.

Originates from Old English swerian, meaning "take an oath," and is related to the Proto-Germanic swarjan, also meaning an oath or vow.

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