foul

Sense 1 noun

an act that violates the rules of a sport

Sense 2 verb

hit a foul ball

Sense 3 adjective

highly offensive; arousing aversion or disgust

a disgusting smell

Sense 4 verb

make impure

The industrial wastes polluted the lake

Sense 5 adjective

offensively malodorous

a foul odor

Sense 6 verb

become or cause to become obstructed

The leaves clog our drains in the Fall

Sense 7 adjective

violating accepted standards or rules

a dirty fighter

Sense 8 verb

commit a foul; break the rules

Sense 9 adjective

(of a baseball) not hit between the foul lines

Sense 10 verb

spot, stain, or pollute

The townspeople defiled the river by emptying raw sewage into it

Sense 11 adjective

(of a manuscript) defaced with changes

foul (or dirty) copy

Sense 12 verb

make unclean

foul the water

Sense 13 adjective

characterized by obscenity

had a filthy mouth

Sense 14 verb

become soiled and dirty

Sense 15 adjective

disgustingly dirty; filled or smeared with offensive matter

as filthy as a pigsty

Sense 16 adjective

especially of a ship's lines etc

with its sails afoul