on a string

Prepositional phrase

dated

Under one's control or influence. / (dated) In a state of great anxiety.

Japanese Meaning

（誰かの）支配下にある、（影響下にある）状態 / （昔の用法）極度の不安状態

The new CEO had the board members on a string, directing every decision from behind the scenes.

新しいCEOは取締役会を完全に操り、舞台裏からすべての決定を指示していた。

Sense（1）

Under one's control or influence.

The magician had the audience on a string with his fascinating illusions.

Sense（2）

(dated) In a state of great anxiety.