willow in the wind

Noun

idiomatic

(idiomatic) One whose views are easily and regularly changed by the persuasion or influence of others.

Japanese Meaning

影響を受けやすい人 / 他人の説得や影響で考えが変わりやすい人

Don't rely on Mark for a consistent decision; he's a willow in the wind.

マークの判断に頼らないでください。彼は他人の説得や影響ですぐに意見を変える人です。

Sense（1）

(idiomatic) One whose views are easily and regularly changed by the persuasion or influence of others.

willows in the wind

（ plural ）