full of terror
The base word of the word "terrific" is "terror."
Terrific.
more terrific
It was related to the word "terrify"-- to fill someone with terror, to frighten them.
She gave a terrific speech yesterday.
We had a terrific time at the beach.
if you mean pictures, terrific.
Yes, both are. Terrific was originally an adjective form of the noun terror. Amazed is the past participle of the verb to amaze.
The New Testament
If you mean "sleep inducing," the correct spelling is "soporific".The slang term superific (great, terrific) is not widely used.
The word is spelled terrific. Example: After a shower, I felt terrific!
Winter jacket.