Definition: not fair; marked by injustice or partiality or deception
Usage: used unfair methods; it was an unfair trial; took an unfair advantage
Similar words: below the belt
Definition: disregarding the rules (from the notion of an illegal low blow in boxing)
Usage: her accusations were below the belt
Similar words: unsporting, unsportsmanlike, dirty, foul, cheating
Definition: violating accepted standards or rules
Usage: a dirty fighter; used foul means to gain power; a nasty unsporting serve; fined for unsportsmanlike behavior
Similar words: raw
Definition: brutally unfair or harsh
Usage: received raw treatment from his friends; a raw deal