supersonic
/ˌsupərˈsɑnɪk/
adjective
- Faster than the speed of sound (about 767 miles per hour at sea level).
- Some military aircraft can fly at supersonic speeds, creating a loud sonic boom.
- The Concorde was a famous supersonic passenger jet that crossed the Atlantic in under four hours.
- Supersonic travel is exciting, but it uses a lot of fuel.
- Very fast; extremely quick (often used figuratively).
- She finished her homework at a supersonic pace so she could go outside.
- The internet connection at the new office is supersonic compared to our old one.
- The delivery service promises supersonic shipping for an extra fee.
Antonyms