Definition of rapid-fire in US English:

rapid-fire

adjective

  • 1attributive (especially of something said in dialogue or done in a sequence) unhesitating and rapid.

    ‘a rapid-fire exchange of questions and answers’
    1. 1.1 (of a gun) able to fire shots in rapid succession.

Pronunciation

rapid-fire

/ˈræpəd ˈˌfaɪ(ə)r//ˈrapəd ˈˌfī(ə)r/