adjective
- extremely fast or quick
Usage: informal
adverb
- in an extremely fast manner
Usage: informal
Examples
- The new superfast train can reach speeds of 200 mph.
- She has a superfast internet connection at home.
- The superfast computer processed the data in seconds.
- He ran superfast to catch the bus.
- The superfast delivery service guarantees same-day shipping.
- The athlete’s superfast reflexes helped her win the race.