とんでもない (translations)→ absolutely big colossal crazy desperate dreadful egregiously extraordinary extremely furious goddamn hell large major mega miserable odd outlandish outrageous real really ridiculous severe shocking sodding terrible terrific unsocial very
狂う (translations)→ addle adrift askew fit mad set wildly
狂気の (translations)→ looney wild
突拍子もない (translations)→ absurd extravagant preposterous quixotic remote unexpected