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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
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Idiom
What is the origin of the idiom "blow hot and cold" and when to use it?
The idiom "blow hot and cold" is derived from an old English proverb dating back to the 16th century. It is used to describe someone who frequently changes their attitude, feelings, or opinions about something or someone.
Examples
He blows hot and cold about joining the team; one day he's excited, the next he's hesitant.
