Synonyms: poser, toughie, sticker, stumper
Definition: a particularly difficult or baffling question or problem
Similar words: problem
Definition: a question raised for consideration or solution
Usage: our homework consisted of ten problems to solve
Synonyms: goon, hood, hoodlum, strong-armer, tough, toughie, thug, punk
Definition: an aggressive and violent young criminal
Similar words: criminal, crook, malefactor, felon, outlaw
Definition: someone who has committed a crime or has been legally convicted of a crime