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Showing results for hypersonic. Search instead for hypertoni.
Definitions

hypersonic

[hahy-per-son-ik] / ˌhaɪ pərˈsɒn ɪk /
ADJECTIVE
fast
Synonyms
STRONGEST
agile brisk hot nimble quick rapid swift
STRONG
accelerated active dashing electric flashing fleet fleeting flying hurried racing ready snap split-second winged
WEAK
PDQ blue streak breakneck double-time expeditious expeditive hairtrigger hasty in a jiffy in nothing flat lickety split like a bat out of hell like all get out like crazy like mad on the double posthaste presto pronto screamin' snappy speedball supersonic velocious
Antonyms
STRONGEST
clumsy slow
STRONG
dull
WEAK
plodding tardy unhurried

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.

The company’s goal is to eventually develop a hypersonic plane reaching Mach 5, or five times the speed of sound, and Southern California has the engineering talent base to help achieve that, executives said.

From Los Angeles Times • Apr. 7, 2026

In addition to drones, Kratos makes parts for solid rocket motors and hypersonic technologies.

From Barron's • Apr. 6, 2026

President Donald Trump last year ordered his administration to develop a plan for a space-based shield capable of intercepting ballistic, cruise and hypersonic missiles, which he dubbed the “Golden Dome.”

From MarketWatch • Mar. 25, 2026

The Army is also developing a hypersonic missile with a range of over 1,000 miles that travels at five times the speed of sound.

From The Wall Street Journal • Mar. 19, 2026

But even with the errors, the machines processed the transonic, supersonic, and hypersonic flows and trajectory analyses in a way that surpassed the upper limits of human ability.

From "Hidden Figures" by Margot Lee Shetterly