<p><strong>Adjective</strong></p><ul><li>not proper; not strictly belonging, applicable, correct, etc.; erroneous: He drew improper conclusions from the scant evidence.</li><li>Synonyms: unsuited, unfit, inapplicable</li><li>Antonyms: suitable, fitting</li><li>not in accordance with propriety of behavior, manners, etc.: improper conduct at a funeral.</li><li>Synonyms: unsuited, indecorous, unfit, inapplicable</li><li>Antonyms: proper</li><li>unsuitable or inappropriate, as for the purpose or occasion: improper attire for a formal dance.</li><li>Synonyms: unsuited, unfit, inapplicable</li><li>Antonyms: suitable, fitting</li><li>abnormal or irregular: improper functioning of the speech mechanism.</li></ul>