Find Antonyms

supersonic Antonyms

Opposite of supersonic

Because the opposite of supersonic shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
JUMP TO:

• adjective (Context 1)

Involving, designating, or capable of traveling at a speed greater than the speed of sound in a given medium, especially air.

Usage Example

"The aerospace engineers tested the new subsonic passenger jet in a specialized wind tunnel."

Strongest
subsonic

• adjective (Context 2)

(Dated) Of or relating to sound waves with a frequency above the upper limit of human hearing; ultrasonic.

Usage Example

"Early twentieth-century physics papers often referred to high-frequency acoustic vibrations as infrasonic waves."

Strongest
infrasonic

Similar words to supersonic

Words similar to supersonic shift depending on context. Common synonyms include:

ultrasonic
ultrafast
superfast
high-speed
See all synonyms of supersonic

• Nearby Words

supersmart
supersmooth
supersoft
supersonic
superspecial
superspeed
superspreading

Cite this Entry

Wordmom. (2026). Antonyms for Supersonic. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/supersonic
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.