Improper vs Unappropriate - What's the difference?

In obsolete|lang=en terms the difference between improper and unappropriate

is that improper is (obsolete) to behave improperly while unappropriate is (obsolete) not appropriated.

As adjectives the difference between improper and unappropriate

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while unappropriate is inappropriate; unsuitable.

As verbs the difference between improper and unappropriate

is that improper is (obsolete|transitive) to appropriate; to limit while unappropriate is to take from private possession; to restore to the possession or right of all.

improper

English

Alternative forms

* impropre (obsolete)

Adjective

(en adjective)

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

(obsolete) Not specific or appropriate to individuals; general; common.

* J. Fletcher

Not to be adorned with any art but such improper ones as nature is said to bestow, as singing and poetry.

Derived terms

* improper divisor * improper face * improper fit * improper fraction * improper integral * improper motion * improper node * improper orthogonal transformation * improper rotation * improper use * improper workmanship

Verb

(en verb)

(obsolete) To appropriate; to limit.

* Jewel

He would in like manner improper and inclose the sunbeams to comfort the rich and not the poor.

(obsolete) To behave improperly

(Webster 1913)

unappropriate

English

Verb

(unappropriat)

To take from private possession; to restore to the possession or right of all.

to unappropriate a monopoly

(Milton)

Adjective

(en adjective)

Inappropriate; unsuitable.

(obsolete) Not appropriated.

(Bishop Warburton)

(Webster 1913)