Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
supersonic | No | Yes | No | No |
unhearable | No | Yes | No | No |
supersonic (adjective) | unhearable (adjective) |
---|---|
(of speed) greater than the speed of sound in a given medium (especially air) | impossible to hear; imperceptible by the ear |
having frequencies above those of audible sound |