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 18 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, ultra-sonic, eddy-current, sensor, vibrometry and null.