utter vs utterable

utter and utterable both are adjectives.

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

utter (adjective)	utterable (adjective)
complete and absolute	capable of being uttered in words or sentences
without qualification; used informally as (often pejorative) intensifiers

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