High-pitched and piercing.
Having a pitch corresponding to a relatively large number of sound-wave cycles per second:
(Of a speed) greater than the speed of sound (in the same medium, and at the same temperature and pressure)
Find another word for ultrasonic. In this page you can discover 7 synonyms, antonyms, idiomatic expressions, and related words for ultrasonic, like: shrill, high, supersonic, above 20, 000 vibrations per second, too high for human ears or hearing and suprasonic.