improper
/ɪmˈpɹɔp.ə/
verb
Meaning
To appropriate; to limit.
To behave improperly
adjective
Meaning
Unsuitable to needs or circumstances; inappropriate; inapt
Not in keeping with conventional mores or good manners; indecent or immodest
Not according to facts; inaccurate or erroneous
Not consistent with established facts; incorrect
Not properly named; See, for example, improper fraction
Not specific or appropriate to individuals; general; common.