supersonic
Upper-Intermediate (B2)
IPA: //ˌsuːpəˈsɒnɪk//
KK: /sjuːpəˈsɒnɪk/
adjective
Definition
Relating to speeds that are faster than the speed of sound, especially in air.
Example
The supersonic jet flew across the sky in a matter of seconds.
Conversation
Did you hear about the new supersonic jet they just tested?
Yeah, I read it can travel from New York to London in just a few hours!
That's amazing! Imagine flying that fast across the ocean.
I know, right? It might change air travel forever.
Synonyms & Antonyms
Synonyms
hypersonic
ultrasonic
fast
Antonyms
subsonic
slow
lethargic
noun
Definition
A type of wave or airplane that travels faster than the speed of sound.
Example
The supersonic jet flew across the sky at an incredible speed.
Conversation
Have you ever seen a supersonic airplane in action?
No, I haven't, but I've heard they fly really fast!
Yeah, they can break the sound barrier, which is amazing.
Root Explanation
Supersonic → It is formed from "super-" (meaning above or beyond) and "sonic" (from Latin "sonus", meaning sound). The word "supersonic" refers to speeds that are above the speed of sound.
Memory Tip
Think of something that moves 'beyond' ('super-') the 'sound' ('sonic') barrier — that's why supersonic describes speeds faster than sound.
Visually Confused Words
unparsonic
hypersonic