Sekirov Dictionary

take someone's name in vain

verb1

•
To speak insultingly about someone, especially behind their back.
- He never once took her name in vain among the fellows: and she had not been a very good girl, either. — 1887

forms

took someone's name in vain · taken someone's name in vain · taking someone's name in vain · takes someone's name in vain

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