foul

nouns

an act that violates the rules of a sport
foul
domain category
an active diversion requiring physical exertion and competition
athletics, sport
is a type of (narrower)
an act that disregards an agreement or a right
"he claimed a violation of his rights under the Fifth Amendment"
infringement, violation

verbs

hit a foul ball
foul
domain category
a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs
"he played baseball in high school"; "there was a baseball game on every empty lot"; "there was a desire for National League ball in the area"; "play ball!"
baseball, baseball game
is a type of (narrower)
cause to move by striking
"hit a ball"
hit
make impure
"The industrial wastes polluted the lake"
contaminate, foul, pollute
become or cause to become obstructed
"The leaves clog our drains in the Fall"; "The water pipe is backed up"
back up, choke, choke off, clog, clog up, congest, foul
commit a foul; break the rules
foul
is a type of (narrower)
participate in games or sport
"We played hockey all afternoon"; "play cards"; "Pele played for the Brazilian teams in many important matches"
play
spot, stain, or pollute
"The townspeople defiled the river by emptying raw sewage into it"
befoul, defile, foul, maculate
make unclean
"foul the water"
foul
is a type of (narrower)
make soiled, filthy, or dirty
"don't soil your clothes when you play outside!"
begrime, bemire, colly, dirty, grime, soil
become soiled and dirty
foul
is a type of (narrower)
undergo a change; become different in essence; losing one's or its original nature
"She changed completely as she grew older"; "The weather changed last night"
change

adjectives

highly offensive; arousing aversion or disgust
"a disgusting smell"; "distasteful language"; "a loathsome disease"; "the idea of eating meat is repellent to me"; "revolting food"; "a wicked stench"
disgustful, disgusting, distasteful, foul, loathly, loathsome, repellant, repellent, repelling, revolting, skanky, wicked, yucky
offensively malodorous
"a foul odor"; "the kitchen smelled really funky"
fetid, foetid, foul, foul-smelling, funky, ill-scented, noisome, smelly, stinking
is derived from
foulness
violating accepted standards or rules
"a dirty fighter"; "used foul means to gain power"; "a nasty unsporting serve"; "fined for unsportsmanlike behavior"
cheating, dirty, foul, unsporting, unsportsmanlike
is derived from
foulness
(of a baseball) not hit between the foul lines
foul
antonym
fair
is similar to
outside the foul lines
out-of-bounds
domain category
a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs
"he played baseball in high school"; "there was a baseball game on every empty lot"; "there was a desire for National League ball in the area"; "play ball!"
baseball, baseball game
(of a manuscript) defaced with changes
"foul (or dirty) copy"
dirty, foul, marked-up
characterized by obscenity
"had a filthy mouth"; "foul language"; "smutty jokes"
cruddy, filthy, foul, nasty, smutty
disgustingly dirty; filled or smeared with offensive matter
"as filthy as a pigsty"; "a foul pond"; "a nasty pigsty of a room"
filthy, foul, nasty
is derived from
foulness
especially of a ship's lines etc
"with its sails afoul"; "a foul anchor"
afoul, foul, fouled