frightful vs tremendous

frightful and tremendous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
frightful	No	Yes	No	No
tremendous	No	Yes	No	No

As adjectives, frightful and tremendous are synonyms defined as:

frightful and tremendous: extreme in degree or extent or amount or impact

Other synonyms of frightful include awful, terrible.

frightful (adjective)	tremendous (adjective)
provoking horror	extraordinarily good or great; used especially as intensifiers
extremely distressing	extraordinarily large in size or extent or amount or power or degree
extreme in degree or extent or amount or impact	extreme in degree or extent or amount or impact