terrific

Terrifying, causing terror; terrible; sublime, awe-inspiring.

[T]he diſmal ſhrieks of demoniac rage […] rouſed phantoms of horror in her mind, far more terrific than all that dreaming ſuperſtition ever drew.

Think of wandering amid sepulchral ruins, of stumbling over the bones of the dead, of encountering what I cannot describe,—the horror of being among those who are neither the living or the dead;—those dark and shadowless things that sport themselves with the reliques of the dead, and feast and love amid corruption,—ghastly, mocking, and terrific.

Very strong or intense; excessive, tremendous.

The car came round the bend at a terrific speed.

I've got a terrific hangover this morning.

Extremely good; excellent, amazing.

I say! She's a terrific tennis player.