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.
To make filthy; to defile; to daub; to dirty; to soil; as, to foul the face or hands with mire.
To incrust (the bore of a gun) with burnt powder in the process of firing.
To cover (a ship's bottom) with anything that impered its sailing; as, a bottom fouled with barnacles.
To entangle, so as to impede motion; as, to foul a rope or cable in paying it out; to come into collision with; as, one boat fouled the other in a race.
To become clogged with burnt powder in the process of firing, as a gun.
To become entagled, as ropes; to come into collision with something; as, the two boats fouled.
An entanglement; a collision, as in a boat race.
See Foul ball, under Foul, a.
In various games or sports, an act done contrary to the rules; a foul stroke, hit, play, or the like.
He that has light within his own clear breast May sit in the centre, and enjoy bright day: But he that hides a dark soul and foul thoughts Benighted walks under the mid-day sun; Himself his own dungeon. John Milton
It boggles my mind that the same people who cry 'foul' about rationing an instant later argue to reduce health care benefits for the needy, to defund crucial programs of care and prevention, and to shift thousands of dollars of annual costs to people - elders, the poor, the disabled - who are least able to bear them. Donald Berwick
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. Zhuangzi
I like to see the difference between good and evil as kind of like the foul line at a baseball game. It's very thin, it's made of something very flimsy like lime, and if you cross it, it really starts to blur where fair becomes foul and foul becomes fair. Harlan Coben