"TERRIFIC" DOES NOT MEAN "TERRORIFICO"
Sometimes I use this word in class and the Spanish are often a little confused by its meaning because it does not have anything to do with "terrorifico".
We use the word "terrific" in a variety of ways but most of the time it is used to describe something that is huge, massive, great or gigantic.
So for example you can say: "I was walking down the street when I heard a terrific noise (loud noise)" or "I hope you have a terrific day (wonderful day)" or "The concert was terrific (amazing)".
Hope that helps!
Soy el director de Daniel Smith + Partners. Tengo más de 10 años de experiencia enseñando inglés a españoles.