Definition of "no sooner than" in English

Preposition

1. Used other than figuratively or idiomatically: see no,‎ sooner,‎ than.

   • He will arrive no sooner than ten o'clock.

Conjunction

1. Used other than figuratively or idiomatically: see no,‎ sooner,‎ than.

   • He will arrive no sooner than I will.

2. At the moment when; instantaneously after; immediately after.

   • No sooner had he arrived than the others grew talkative.

3. Used to indicate that the second action mentioned is as likely as, or is preferred to, the first action mentioned.

   • I'd no sooner shop at their store than jump in a lake.