pass on vs utter

pass on is not an adjective while utter is an adjective.

Word	Noun	Adjective	Verb	Adverb
pass on	No	No	Yes	No
utter	No	Yes	Yes	No

As verbs, utter is a hyponym of pass on; that is, utter is a word with a more specific, narrower meaning than pass on:

Other hyponyms of pass on include send around, scatter, spread, spread out.

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

pass on (verb)	utter (verb)
transmit information	express in speech
cause to be distributed	articulate; either verbally or with a cry, shout, or noise
move forward, also in the metaphorical sense	express audibly; utter sounds (not necessarily words)
give to or transfer possession of	put into circulation
place into the hands or custody of
transmit (knowledge or skills)
refer to another person for decision or judgment