horrible (adj.)

c. 1300, "dreadful, terrible," from Old French horrible, orrible (12c.) "horrible, repugnant, terrifying," from Latin horribilis "terrible, fearful, dreadful" (source also of Spanish horrible, Portuguese horrivel, Italian orribile), from horrere "be terrified, bristle with fear, shudder" (see horror). Used as a mere intensifier from mid-15c.