to blow hot and cold
01
to change one's opinions about something often and quickly, sometimes being enthusiastic and other times indifferent or negative
![to [blow] hot and cold definition and meaning](https://cdn.langeek.co/photo/22105/original/?type=jpeg "to [blow] hot and cold definition and meaning")
Idiom
例
She keeps blowing hot and cold about moving to a new city, making it hard to plan.
His feelings for the project blow hot and cold, so the team is n't sure how committed he is.
