1) Falling on deaf ears 2) Falling upon deaf ears 3) Inaudible 4) Like the salutation Dear Hun 5) Not given an audience 6) Not heard 7) Not listened to 8) Not perceived by the ear 9) Not picked up 10) Out of earshot 11) Unhearable 12) Unheard-of 1) Inaudible 2) Unhearable 
• (a.) Not known to fame; not illustrious or celebrated; obscure. • (a.) Not heard; not perceived by the ear; as, words unheard by those present. • (a.) Not granted an audience or a hearing; not allowed to speak; not having made a defense, or stated one`s side of a question; disregarded; unheeded; as, to condem/ a man unheard.Unheard...
[adj] - not necessarily inaudible but not heard
adjective not necessarily inaudible but not heard
not heard; not perceived by the ear. · not given a hearing or audience. · unheard-of.