have someone on a string

have (someone) on a string

To have great influence over someone. If you want to have someone on a string, flattery always helps.
See also: have, on, string

have someone on a string


keep someone on a string

If someone has you on a string or keeps you on a string, they can make you do whatever they want, because they control you completely. It's so unfair — she keeps him on a string and he's crazy about her.
See also: have, on, someone, string
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