Meaning of the word "blow hot and cold" in English

What does "blow hot and cold" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

blow hot and cold

US /bloʊ hɑt ənd koʊld/
UK /bləʊ hɒt ənd kəʊld/
"blow hot and cold" picture

Idiom

to keep changing one's mind about something or someone, or to be inconsistent in one's attitude or behavior

Example:
He keeps blowing hot and cold about the new project, so I don't know what he really wants.
Their relationship is unstable because they always blow hot and cold with each other.