audio-, aud-, audi-, audit- +
(Latin: hearing, listening, perception of sounds)
unaudible
Not hearable or incapable of being heard.
unaudited
Not having been audited; such as, an unaudited financial statement.
verbera, sed audi
Literally, "Beat me, but hear me out." Freely translated as, "Don't shoot the messenger."
Related "hear, hearing; listen, listening" units:
acous-;
ausculto-.