- 1dishonest or morally wrong improper business practices improper conduct There was nothing improper about our relationship. opposite proper
- 2(formal) not suited or appropriate to the situation synonym inappropriate It would be improper to comment at this stage. opposite proper
- 3wrong; not correct improper use of the drug
adverb to behave improperly He was improperly dressed for the occasion. improperly cooked meatSee improper in the Oxford Advanced Learner's Dictionary
Check pronunciation: improper