improper
adjective
1. not suitable or right or appropriate
- slightly improper to dine alone with a married man
- improper medication
- improper attire for the golf course
Similar word(s): inappropriate, indecent, indecorous, indelicate, unfit, indecent, indecorous, unbecoming, uncomely, unseemly, untoward, incorrect, wrong, wrong
2. not conforming to legality, moral law, or social convention
- improper banking practices
Similar word(s): irregular, unconventional, unlawful
3. not appropriate for a purpose or occasion
Similar word(s): inappropriate, wrong
verb
1. (obsolete, transitive) To appropriate; to limit.
2. (obsolete) To behave improperly