toughie

toughie [ta-fi]
sustantivo
1The exam was a real toughie, el examen fue dificilísimo. (Coloquial)
2Matoncito.

toughie (informal) [ˈtʌfɪ]
noun
(difficult question) pregunta peliaguda; (f)
"The question is: do you love her?" "That's a toughie." said Jack
(person) bravucónonabravucona;ona bravucona (m) (f)
In his latest role he plays a hard-nosed criminal, a real toughie