improper
adj.adj. not right or honest for a specific situation. You use this to describe behavior that is rude, unfair, or against the rules.
adj. not in accordance with accepted standards of behavior, ethics, or social etiquette. Often used in legal or professional contexts to describe actions that are technically or morally wrong.
It is improper to use office equipment for personal business.
The judge ruled that the evidence was obtained in an improper way and could not be used in court.
The committee investigated the executive for improper use of company funds, eventually discovering a series of unauthorized transactions spanning several years.
From Middle French impropre, from Latin improprius (“not proper”), from in- + proprius (“proper”). By surface analysis, im- + proper.
From Middle English empropren, perhaps from an unattested Anglo-Norman variant enproprier of Anglo-Norman apropr(i)er, approprier, related to modern French approprier.
Typically used as an attributive adjective before a noun or as a predicative adjective after a linking verb.
He behaved very improper.He behaved very improperly.Learners often use the adjective form instead of the adverb 'improperly' to describe an action.