under no circumstances


Also found in: Dictionary, Thesaurus, Medical, Legal.

under no circumstances

 and not under any circumstances
Fig. absolutely never. Andy: Under no circumstances will I ever go back there again! Rachel: Why? What happened? Sue: Can I talk you into serving as a referee again? Mary: Heavens, no! Not under any circumstances!
See also: circumstance

under no circumstances

not for any reason Abby's mother said that under no circumstances could Abby go out with her pals.
See also: circumstance

under no circumstances

In no case; never.
See also: circumstance