foul

Substandard is a related term of foul.

As an adjective substandard

is of inferior quality; not meeting the minimum quality requirements.

As a noun foul is

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

As nouns the difference between foul and free

is that foul is foul (a breach of the rules of a game) while free is (australian rules football|gaelic football) abbreviation of free kick.

As an adjective free is

(label) unconstrained.

As an adverb free is

without needing to pay.

As a verb free is

to make free; set at liberty; release; rid of that which confines, limits, embarrasses, or oppresses.

Spoiled is a related term of foul.

As a verb spoiled

is (spoil).

As an adjective spoiled

is of food, that has deteriorated to the point of no longer being usable or edible.

As a noun foul is

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

Inferior is a related term of foul.

As nouns the difference between inferior and foul

is that inferior is a person of lower stature to another while foul is foul (a breach of the rules of a game).

As an adjective inferior

is of lower quality.

In obsolete terms the difference between faulty and foul

is that faulty is at fault, to blame; guilty while foul is ugly; homely; poor.

As adjectives the difference between faulty and foul

is that faulty is having or displaying faults; not perfect; not adequate or acceptable while foul is covered with, or containing unclean matter; polluted; nasty; defiled.

As a verb foul is

to make dirty.

As a noun foul is

a breach of the rules of a game, especially one involving inappropriate contact with an opposing player in order to gain an advantage; as, for example, foot-tripping in soccer, or contact of any kind in basketball.

Foul is a related term of foul-mounthed.

In transitive terms the difference between foul and begrime

is that foul is to clog or obstruct while begrime is to make something dirty; to soil.

As an adjective foul

is covered with, or containing unclean matter; polluted; nasty; defiled.

As a noun foul

is a breach of the rules of a game, especially one involving inappropriate contact with an opposing player in order to gain an advantage; as, for example, foot-tripping in soccer, or contact of any kind in basketball.

Foul is a related term of acrimonious.

As a noun foul

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

As an adjective acrimonious is

angry, acid, and sharp in delivering argumentative replies: bitter; mean-spirited; sharp in language or tone.

Foul is a related term of bedaub.

As a noun foul

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

As a verb bedaub is

to smear upon; to soil.

Foul is a synonym of gusty.

As a noun foul

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

As an adjective gusty is

(of wind) blowing in gusts; blustery.