terrific vs fantastic

terrific and fantastic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
terrific	No	Yes	No	No
fantastic	No	Yes	No	No

As adjectives, terrific and fantastic are synonyms defined as:

terrific and fantastic: extraordinarily good or great; used especially as intensifiers

Other synonyms of terrific include grand, howling, marvellous, marvelous, phenomenal, rattling, tremendous, wonderful, wondrous.

terrific (adjective)	fantastic (adjective)
causing extreme terror	extraordinarily good or great; used especially as intensifiers
extraordinarily good or great; used especially as intensifiers	extravagantly fanciful in design, construction, appearance
very great or intense	ludicrously odd
	existing in fancy only
	fanciful and unrealistic; foolish