tut-tut vs utter

tut-tut is not an adjective while utter is an adjective.

Word	Noun	Adjective	Verb	Adverb
tut-tut	No	No	Yes	No
utter	No	Yes	Yes	No

As verbs, utter is a hypernym of tut-tut; that is, utter is a word with a broader meaning than tut-tut:

Other hypernyms of tut-tut include emit, let loose, let out.

tut-tut (adjective)	utter (adjective)
	complete and absolute
	without qualification; used informally as (often pejorative) intensifiers

tut-tut (verb)	utter (verb)
utter `tsk,' `tut,' or `tut-tut,' as in disapproval	express in speech
	articulate; either verbally or with a cry, shout, or noise
	express audibly; utter sounds (not necessarily words)
	put into circulation