He runs hot and cold about his new job.
run hot and cold
idiomTo alternate between two opposite extremes, such as enthusiasm and disinterest or success and failure.
My friend runs hot and cold regarding our travel plans, so I never know if we are actually going.
The unpredictable investor runs hot and cold, showing great interest in the project one day and complete indifference the next.
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a cold day in July
The time of occurrence of an event that will never happen.
- 02
baking hot
Very hot.
- 03
blow hot air
To engage in empty or exaggerated talk that lacks substance, credibility, or truth; to bluster.
- 04
blow hot and cold
To behave inconsistently; to vacillate or to waver, as between extremes of opinion or emotion.
- 05
boiling hot
Extremely hot (having a high temperature: of an object, the weather, a living creature).
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break into a run
To start running.
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catch a cold
To contract a cold.
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cold cash
Money, regarded as an incentive that can override any doubts or ethical concerns.
Last updated April 17, 2026