blubber out vs utter

blubber out is not an adjective while utter is an adjective.

Word	Noun	Adjective	Verb	Adverb
blubber out	No	No	Yes	No
utter	No	Yes	Yes	No

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

Other hypernyms of blubber out include mouth, speak, talk, verbalise, verbalize.

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

blubber out (verb)	utter (verb)
utter while crying	express in speech
	articulate; either verbally or with a cry, shout, or noise
	express audibly; utter sounds (not necessarily words)
	put into circulation