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terrific 
1  adj If you describe something or someone as terrific, you are very pleased with them or very impressed by them. 
INFORMAL 
(=great) 

What a terrific idea!...  
2  adj Terrific means very great in amount, degree, or intensity., (emphasis)   (=tremendous) 
All of a sudden there was a terrific bang and a flash of smoke.  
 terrifically  adv 
...the only child of terrifically repressed parents.