mellow out
Become genial or pleasant, calm down, relax, as in The teacher mellowed out when they explained what had happened. This expression uses mellow in the sense of “ripening,” with the connotation of softness and sweetness. [Slang; late 1900s]
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Words nearby mellow out
mellitum, Mellon, mellophone, Mellotron, mellow, mellow out, Melo, melodeon, melodia, melodic, melodic interval
The American Heritage® Idioms Dictionary
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