: very unpleasant to taste or smell
: morally bad : very evil
: very bad or unpleasant
sports : an action that is against the rules and for which a player is given a penalty
baseball : a batted ball that lands outside the foul lines : a foul ball
: to make (a substance, place, etc.) dirty
sports : to commit a foul
: to commit a foul against (another player)
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