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Synonyms

supersonic

American  
[soo-per-son-ik] / ˌsu pərˈsɒn ɪk /

adjective

  1. greater than the speed of sound waves through air.

  2. capable of achieving such speed.

    a supersonic plane.

  3. ultrasonic.

supersonic British  
/ ˌsuːpəˈsɒnɪk /

adjective

  1. being, having, or capable of reaching a speed in excess of the speed of sound

    supersonic aircraft
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
supersonic Scientific  
/ so̅o̅′pər-sŏn′ĭk /

  1. Having a speed greater than that of sound in a designated medium, usually air; having a speed greater than Mach 1.

  2. Compare hypersonic subsonic transonic

Other Word Forms

  • supersonically adverb

Etymology

Origin of supersonic

First recorded in 1915–20; super- + sonic

Compare meaning

How does supersonic compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

My thoughts are a scrambled mess of everything that’s happened between us, and they play at supersonic speed in my head.

From Literature

The missiles fly at supersonic speeds and are highly accurate.

From The Wall Street Journal

But his supersonic speed and sky-high try-scoring rate – the easiest currency for casual fans to understand - mean those requests will only increase.

From BBC

Iran has lately sought to acquire Chinese supersonic antiship cruise missiles capable of threatening U.S. naval forces in the Persian Gulf.

From The Wall Street Journal

Known for: Highly maneuverable, supersonic light fighter, excellent dogfighting capabilities.

From The Wall Street Journal

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.