Give audible expression to something absolute (5)

I believe the answer is:

utter

I'm a little stuck... Click here to teach me more about this clue!

'absolute' is the definition.
(synonyms)

I can't explain the rest of the clue.

(Other definitions for utter that I've seen before include "Articulate, express" , "Give voice" , "Express; complete" , "in toto" , "Speak - it's extreme" .)

I've seen this clue in The Irish Times.

Want a hint initially instead of a full solution? Install my app