Definitions
1.AdjectiveUnsuitable to needs or circumstances; inappropriate; inapt.
2.AdjectiveNot in keeping with conventional mores or good manners; indecent or immodest."improper conduct"
3.AdjectiveNot according to facts; inaccurate or erroneous.
4.AdjectiveNot consistent with established facts; incorrect.
5.AdjectiveNot properly named; See, for example, improper fraction.
6.AdjectiveNot specific or appropriate to individuals; general; common.
7.AdjectiveOf a complex random variable, correlated with its conjugate.
8.VerbTo appropriate; to assign (something, to someone) as a possession or prerogative.