| 1. |
(adjective) not suitable or right or appropriate; "slightly improper to dine alone with a married man"; "improper medication" |
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Antonyms: proper |
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| 2. |
(satellite adjective) not conforming to legality, moral law, or social convention; "an irregular marriage"; "improper banking practices" |
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Synonyms: unconventional, unlawful |
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| 3. |
(satellite adjective) not appropriate for a purpose or occasion; "unsuitable attire for the office"; "said all the wrong things" |
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Synonyms: unsuitable, wrong |
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