adj, noun, slang ·4 syllables ·Moderate ·College level

Definitions

Noun

1. 1
   An aircraft that can travel at the speed of sound.

Adjective

1. 1
   Greater than the speed of sound (in the same medium, and at the same temperature and pressure). not-comparable

   "supersonic jet"

2. 2
   Ultrasonic, having a frequency too high to be audible. colloquial, not-comparable

Adjective

1. 1
   having frequencies above those of audible sound wordnet
2. 2
   (of speed) greater than the speed of sound in a given medium (especially air) wordnet

Synonyms

All synonyms

acousticacousticalphonicsuperacousticswifttransonic

Antonyms

All antonyms

sonicsubsonic

Example

More examples

"The airplane is capable of supersonic speeds."

Etymology

From super- + sonic. Doublet of hypersonic.

Related phrases

supersonic heterodyne receiverspeed of sound

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.