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Definitions

supersonic

[soo-per-son-ik] / ˌsu 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 hypersonic 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 velocious
Antonyms
STRONGEST
clumsy slow
STRONG
dull
WEAK
plodding tardy unhurried
ADJECTIVE
speedy
Synonyms
STRONGEST
accelerated brisk expeditious hasty hurried immediate prompt rapid swift
WEAK
agile alacritous breakneck express fleet harefooted headlong lissome lively nimble precipitate quick-fire rapid-fire ready snappy split-second summary ultrasonic winged
Antonyms
STRONGEST
delayed leisurely slow sluggish
WEAK
halted slowed tardy
ADJECTIVE
swift
Synonyms
STRONGEST
abrupt expeditious hasty nimble quick rapid speedy sudden unexpected
STRONG
cracking express fleet flying precipitate prompt ready screaming short spanking
WEAK
alacritous barrelling breakneck double-quick fleet-footed headlong hurried in nothing flat like crazy like mad on the double pronto shaking a leg short-lived snappy speedball winged
Antonyms
STRONGEST
delayed expected lazy leisurely slow
WEAK
sluggish
NOUN
jet
Synonyms
STRONGEST
airplane plane
STRONG
airbus
WEAK
supersonic transport turbo

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.

Excluding contributions from ironSource and Supersonic, revenue within Unity’s Grow unit rose 48% last quarter, “double the growth rate of the comparable metric inclusive of the two units.”

From Barron's • Mar. 27, 2026

Boom Supersonic said its goal is to have 4GW of manufacturing capacity or more annually by 2030.

From The Wall Street Journal • Feb. 17, 2026

The test flight of a plane called XB-1, developed by the company Boom Supersonic, became the first civilian jet to break the sound barrier since the Concorde.

From The Wall Street Journal • Nov. 19, 2025

Supersonic will likely behave better than the Gallaghers, but for Angeleno Anglophiles, this week’s revelry is on par with Taylor Swift’s Eras tour or a BTS reunion coming to town.

From Los Angeles Times • Sep. 5, 2025

Still fuming as she walked back to West Computing later that day, Mary Jackson ran into Kazimierz Czarnecki, an assistant section head in the Four-by-Four-Foot Supersonic Pressure Tunnel.

From "Hidden Figures" by Margot Lee Shetterly

Vocabulary lists containing supersonic

Common Senses: Son ("Sound")

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The Crossover

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This Week in Words: Current Events Vocab for March 16–March 22, 2024

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