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English definition of “mellow”

mellow

verb [I/T] (SOFTEN)   /ˈmel·oʊ/
to become more pleasing because of becoming more smooth, soft, or well developed and less sharp, bright, new, or rough: [I] The bright orange of the fresh paint mellowed as it dried. [T] Those medicinal herbs can be mixed with more appetizing herbs (= herbs that taste better) to mellow their flavors.
(Definition of mellow verb (SOFTEN) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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