Acou

2 clues
Hear: Prefix
Hearing: Comb. form
Similar answers:
8out
Aaacell
Aac
Aacell
Aacells
Aachen
Aacid
Aandppearincourt
Aaronburrconspiracy
Aattheraces
Abac
Abaca
Abacab
Abacas
Abaci
Aback
Abackseat
Abackwardpoet
Abaco
Abacs