vocalise vs utter

vocalise is not an adjective while utter is an adjective.

Word	Noun	Adjective	Verb	Adverb
vocalise	No	No	Yes	No
utter	No	Yes	Yes	No

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

Other hypernyms of vocalise include mouth, speak, talk, verbalise, verbalize.

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

vocalise (verb)	utter (verb)
pronounce as a vowel	express in speech
express or state clearly	articulate; either verbally or with a cry, shout, or noise
utter with vibrating vocal chords	express audibly; utter sounds (not necessarily words)
utter speech sounds	put into circulation
sing (each note a scale or in a melody) with the same vowel