improper

As adjectives the difference between improper and unreasonable

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while unreasonable is not reasonable.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

As adjectives the difference between improper and inadmissible

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while inadmissible is not admissible, especially that cannot be admitted as evidence at a trial.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

Improper is a related term of noxious.

As adjectives the difference between improper and noxious

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while noxious is harmful; injurious.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

Absurd is a related term of improper.

As adjectives the difference between absurd and improper

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

As a verb improper is

(obsolete|transitive) to appropriate; to limit.

Improper is a related term of unpleasant.

As adjectives the difference between improper and unpleasant

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while unpleasant is not pleasant.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

In obsolete terms the difference between imperfect and improper

is that imperfect is lacking some elementary organ that is essential to successful or normal activity while improper is to behave improperly.

As adjectives the difference between imperfect and improper

is that imperfect is not perfect while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As a noun imperfect

is something having a minor flaw.

As a verb improper is

to appropriate; to limit.

Unfit is a related term of improper.

As adjectives the difference between unfit and improper

is that unfit is not fit; not having the correct requirements while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As verbs the difference between unfit and improper

is that unfit is to make unfit; to render unsuitable, spoil, disqualify while improper is (obsolete|transitive) to appropriate; to limit.

Improper is a related term of grievous.

As adjectives the difference between improper and grievous

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while grievous is causing grief, pain or sorrow.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

Improper is a related term of irascible.

As adjectives the difference between improper and irascible

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while irascible is easily provoked to outbursts of anger; irritable.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

Improper is a related term of snide.

As adjectives the difference between improper and snide

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while snide is disparaging or derisive in an insinuative way.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

As a noun snide is

an underhanded, tricky person given to sharp practise; a sharper; a beat.