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adjectivenot conforming to legality, moral law, or social convention
Similar:
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adjectivenot appropriate for a purpose or occasion
Similar:
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adjectivenot suitable or right or appropriate
Similar:
Opposite:
Examples of improper
- "improper banking practices"
- "slightly improper to dine alone with a married man"
- "improper medication"
- "improper attire for the golf course"