be under (someone's) spell(redirected from be under their spell)
be under (someone's) spell
To be influenced or controlled by someone because one finds them fascinating, enchanting, or seductive. Our son has never acted out like this before. I think he must be under his new friend's spell or something. Such was the magnitude of the duchess's beauty that countless men have been under her spell.
See also: spell
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.