Subsonic and Sonic

Opposite meaning words

Subsonic adjective - (of speed) less than that of sound in a designated medium.

Usage example: aircraft flying at subsonic speeds

Show all Definitions

Sonic is an antonym for subsonic.

Sonic adjective - (of speed) having or caused by speed approximately equal to that of sound in air at sea level.

Usage example: a sonic boom

Show all Definitions

Subsonic is an antonym for sonic.

Cite this Source

Sonic and Subsonic. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/subsonic/sonic

Subsonic & Sonic. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/subsonic/sonic>.

Sonic or Subsonic. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/subsonic/sonic.

Google Ngram Viewer shows how "subsonic" and "sonic" have occurred on timeline