Foul
Part of speech: adjective
Definition: Covered with, or containing, extraneous matter which is injurious, noxious, offensive, or obstructive; filthy; dirty; not clean; polluted; nasty; defiled; as, a foul cloth; foul hands; a foul chimney; foul air; a ship's bottom is foul when overgrown with barnacles; a gun becomes foul from repeated firing; a well is foul with polluted water. Scurrilous; obscene or profane; abusive; as, foul words; foul language. Hateful; detestable; shameful; odious; wretched. Loathsome; disgusting; as, a foul disease. Ugly; homely; poor. Not favorable; unpropitious; not fair or advantageous; as, a foul wind; a foul road; cloudy or rainy; stormy; not fair; -- said of the weather, sky, etc. Not conformed to the established rules and customs of a game, conflict, test, etc.; unfair; dishonest; dishonorable; cheating; as, foul play. Having freedom of motion interfered with by collision or entanglement; entangled; -- opposed to clear; as, a rope or cable may get foul while paying it out. Outside of the base lines; in foul territory.
Part of speech: noun
Definition: 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. A (usually accidental) contact between a bowler and the lane before the bowler has released the ball. A foul ball, a ball which has been hit outside of the base lines.
Part of speech: verb
Definition: To make dirty. To besmirch. To clog or obstruct. To entangle. To make contact with an opposing player in order to gain advantage. To hit outside of the baselines. To become clogged. To become entangled. To commit a foul. To hit a ball outside of the baselines.
Example sentence: All existing things are really one. We regard those that are beautiful and rare as valuable, and those that are ugly as foul and rotten The foul and rotten may come to be transformed into what is rare and valuable, and the rare and valuable into what is foul and rotten.
Unfair
Part of speech: adjective
Definition: Not fair, unjust.
Example sentence: Racism, xenophobia and unfair discrimination have spawned slavery, when human beings have bought and sold and owned and branded fellow human beings as if they were so many beasts of burden.