Hearing is the SENSE of perceiving SOUND, which is made possible by the EAR. The three-letter solution to the crossword for hearing is EAR. A four-letter solution is TEST, which refers to a medical TEST used to measure hearing ability. The five-letter solution SENSE refers to the SENSE of hearing, while SOUND is another five-letter solution that refers to the vibrations that are heard. RECEPTION is a nine-letter solution that refers to the act of perceiving SOUND. TRIAL is a five-letter solution that can refer to a hearing TEST or a court TRIAL. Finally, HARDOF is a six-letter solution that is an abbreviation for hard of hearing.