〜が早いか

Pattern
〜が早いか
Level
N1
Reading
がはやいか
Meaning
As soon as X happened, Y happened (almost simultaneously).
Attaches to
Verb-dictionary form / た-form
Nuance & register

Emphasizes the speed/immediacy of the action.

Example

彼はベルが鳴るが早いか、教室を飛び出した。

Easily confused with

〜とたんに

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