Not suited to circumstances or needs; unsuitable.


Not in keeping with conventional mores; indecorous: synonym: unseemly.


Not consistent with established truth, fact, or rule; incorrect.


Irregular or abnormal.

To impropriate.

Not proper or peculiar to any individual; general; common.

Not of a proper kind or quality; not adapted to or suitable for the purpose or the circumstances; unfit; unbecoming; indecorous: as, an improper medicine; an improper appointment; improper conduct or language.

Not proper in form or method; not according to nature, truth, rule, or usage; abnormal; irregular; erroneous: as, improper development; improper fractions; improper pronunciation; an improper use of words.

transitive verb

To appropriate; to limit.


Not proper; not suitable; not fitted to the circumstances, design, or end; unfit; not becoming; incongruous; inappropriate; indecent