improper

Rotten is a related term of improper.

As a noun rotten

is .

As an adjective improper is

unsuitable to needs or circumstances; inappropriate; inapt.

As a verb improper is

(obsolete|transitive) to appropriate; to limit.

Sinful is a related term of improper.

As adjectives the difference between sinful and improper

is that sinful is full of sin; wicked; iniquitous; unholy 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 salacious.

As adjectives the difference between improper and salacious

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while salacious is promoting sexual desire or lust.

As a verb improper

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

Counterfeit is a related term of improper.

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

is that counterfeit is (obsolete) to feign; to mimic while improper is (obsolete) to behave improperly.

As adjectives the difference between counterfeit and improper

is that counterfeit is false, especially of money; intended to deceive or carry appearance of being genuine while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As verbs the difference between counterfeit and improper

is that counterfeit is to falsely produce what appears to be official or valid; to produce a forged copy of while improper is (obsolete|transitive) to appropriate; to limit.

As a noun counterfeit

is a non-genuine article; a fake.

Tainted is a related term of improper.

As adjectives the difference between tainted and improper

is that tainted is corrupted or filled with imperfections while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As verbs the difference between tainted and improper

is that tainted is (taint) while improper is (obsolete|transitive) to appropriate; to limit.

Spoiled is a related term of improper.

As verbs the difference between spoiled and improper

is that spoiled is (spoil) while improper is (obsolete|transitive) to appropriate; to limit.

As adjectives the difference between spoiled and improper

is that spoiled is of food, that has deteriorated to the point of no longer being usable or edible while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As adjectives the difference between unseemly and improper

is that unseemly is inconsistent with established standards of good form or taste 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 ghastly.

As adjectives the difference between improper and ghastly

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while ghastly is like a ghost in appearance; deathlike; pale; pallid; dismal.

As a verb improper

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

As an adverb ghastly is

in a ghastly manner.

Improper is a related term of foul.

As an adjective improper

is unsuitable to needs or circumstances; inappropriate; inapt.

As a verb improper

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

As a noun foul is

foul (a breach of the rules of a game).

Corrupt is a related term of improper.

As adjectives the difference between corrupt and improper

is that corrupt is in a depraved state; debased; perverted; morally degenerate; weak in morals while improper is unsuitable to needs or circumstances; inappropriate; inapt.

As verbs the difference between corrupt and improper

is that corrupt is to make ; to change from good to bad; to draw away from the right path; to deprave; to pervert while improper is (obsolete|transitive) to appropriate; to limit.