cool off
Verb
Meaning
become quiet or calm, especially after a state of agitation
lose intensity
feel less enamoured of something or somebody
Source: WordNetSynonyms
Antonyms
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Examples
You want hot days to get your fruit ripe but then you want it to cool off nicely at night so that the grapes stay on the vine longer and develop complexity.
If you're having trouble finishing a book, it might be that you're trying to fix it as you go. Just finish the story, no matter how terrible you think that first draft is. Then let it cool off. In other words, don't look at it for a while. Then you can rewrite it.
I'm comfortable only when there's a mutual attraction. That's what anyone wants. If I find out she's not attracted to me, it brings down my level of attraction to her. If I'm interested and find out she's not, I tend to cool off.
After the fight both men need to cool off.
It took a while after the baby was born for things to settle down again.
His enthusiasm cooled considerably