unutterable vs sacred

unutterable and sacred both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unutterable	No	Yes	No	No
sacred	No	Yes	No	No

unutterable (adjective)	sacred (adjective)
defying expression or description	concerned with religion or religious purposes
too sacred to be uttered	(often followed by `to') devoted exclusively to a single use or purpose or person
very difficult to pronounce correctly	made or declared or believed to be holy; devoted to a deity or some religious ceremony or use
	worthy of respect or dedication
	worthy of religious veneration