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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.

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

From The Wall Street Journal • Mar. 6, 2026

I don’t want to go too deep into the plot, which involves a supersonic weapon, stolen software, assassins on motorcycles and a common ticking-clock device, but it’s closer to “Moonraker,” say, than “Slow Horses.”

From Los Angeles Times • Feb. 23, 2026

The arena, first announced in 2018, will be located in one of three Brabazon Hangars which were used in the development of the supersonic jet.

From BBC • Feb. 19, 2026

Fuchsia closes her eyes and plants her feet on the ground like she’s channeling supersonic powers from the blue-painted floorboards.

From "The Benefits of Being an Octopus" by Ann Braden

supersonic

Example Sentences

Related Words