improper

As an adverb incorrectly

is in an incorrect manner.

As an adjective improper is

unsuitable to needs or circumstances; inappropriate; inapt.

As a verb improper is

(obsolete|transitive) to appropriate; to limit.

As adjectives the difference between improper and shameless

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while shameless is having no shame, no guilt nor remorse over something wrong; immodest; unable to feel disgrace.

As a verb improper

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

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.

As adjectives the difference between improper and undefined

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while undefined is lacking a definition or value.

As a verb improper

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

Inferior is a related term of improper.

As adjectives the difference between inferior and improper

is that inferior is of lower quality while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As a noun inferior

is a person of lower stature to another.

As a verb improper is

(obsolete|transitive) to appropriate; to limit.

Improper is a related term of filthy.

As adjectives the difference between improper and filthy

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while filthy is covered with filth; very dirty.

As a verb improper

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

Improper is a related term of low.

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

is that improper is (obsolete|transitive) to appropriate; to limit while low is (obsolete|transitive) to depress; to lower.

As adjectives the difference between improper and low

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while low is in a position comparatively close to the ground.

As verbs the difference between improper and low

is that improper is (obsolete|transitive) to appropriate; to limit while low is (obsolete|transitive) to depress; to lower or low can be or low can be to moo or low can be (uk|scotland|dialect) to burn; to blaze.

As a noun low is

something that is low; a low point or low can be (countable|uk|scotland|dialect) a flame; fire; blaze or low can be , mound, tumulus.

As an adverb low is

close to the ground.

Inharmonious is a related term of improper.

As adjectives the difference between inharmonious and improper

is that inharmonious is (music) not in harmony; discordant 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 putrid.

As adjectives the difference between improper and putrid

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while putrid is rotting, rotten, being in a state of putrefaction.

As a verb improper

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