rapid-fire
adjective
rap·id-fire ˌra-pəd-ˈfī(-ə)r 
1
: firing or adapted for firing shots in rapid succession
2
: marked by rapidity, liveliness, or sharpness
a comedian with a rapid-fire delivery
Synonyms
- blistering
- breakneck
- breathless
- brisk
- dizzy
- fast
- fleet
- fleet-footed
- flying
- galloping
- hasty
- hot
- lightning
- nippy
- quick
- rapid
- rattling
- snappy
- speedy
- splitting
- swift
- whirlwind
- zippy
See all Synonyms & Antonyms 
Word History
First Known Use
1890, in the meaning defined at sense 1
rapid-fire
adjective
as in rapid
moving, proceeding, or acting with great speed the witness stayed unruffled all through the prosecutor's rapid-fire questioning Synonyms & Similar Words
Relevance
- rapid
- quick
- brisk
- galloping
- fast
- swift
- whirlwind
- breakneck
- speedy
- blistering
- hasty
- lightning
- rattling
- zippy
- snappy
- breathless
- flying
- accelerated
- splitting
- hurried
- hot
- fleet
- at speed
- fleet-footed
- vigorous
- dizzy
- expeditious
- prompt
- rushed
- quickened
- breathtaking
- nippy
- rush
- strong
- energetic
- high-speed
- strenuous
- ready
- hastened
- ultrafast
- ultrarapid
Antonyms & Near Antonyms
- slow
- unhurried
- deliberate
- sluggish
- plodding
- languid
- leisurely
- pokey
- lingering
- crawling
- dragging
- dilatory
- slowish
- poky
- laggard
- tardy
- late
- dallying
- measured
- poking
- dawdling
- dillydallying
- ultraslow