Improper
/ˌɪˈmprɑpər/
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Definition
(adj) Unsuitable to needs or circumstances; inappropriate; inapt.
Sentence Examples
This unexpected malfunctioning of the system was caused by improper wiring.
It is improper to impose sanctions upon the union.
CEFR Practice Quiz
The official was fired for his highly ____ use of public funds for personal expenses.