(dated or used in Scotland) An act of terrifying.

plural of terrification

(now rare) Terrifying, causing terror; terrible; sublime, awe-inspiring. / Very strong or intense; excessive, tremendous. / Extremely good; excellent, amazing.

In a terrific or extreme way.

Archaic form of terrific. (inspiring terror) / (dialect) terrific (superb; wonderful)

(slang) terrific; wonderful; very good

The quality of being terrific.