tremendous
Cross references: 1. monstrous tre.men.dous \tri-'men-d*s\ aj [L tremendus, fr. gerundive of tremere] 1: fitted to excite trembling or arouse dread, awe, or terror : DREAD FUL 2: fitted to excite wonder by reason of extreme size, power, greatness, or excellence - tre.men.dous.ly av