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English definition of “mellow”

mellow

adjective uk   /ˈmel.əʊ/ us    /-oʊ/

mellow adjective (SMOOTH)

smooth and soft, or not too sharp, bright, new, or rough: mellow flavours mellow sounds mellow autumn sunlight

mellow adjective (RELAXED)

relaxed and pleasant or not severe: a mellow mood/atmosphere After a few drinks, he became very mellow.

mellow

verb uk   /ˈmel.əʊ/ us    /-oʊ/

mellow verb (BECOME SOFTER)

[I] to become softer and more developed in a pleasing way: The brickwork will mellow over the years so that it blends with the surroundings.

mellow verb (BECOME RELAXED)

[I or T] to become more relaxed: She used to be very impatient, but she's mellowed over time. The years have mellowed her.US informal Oh don't be so tough on yourself, Bill - mellow out (= become more relaxed and less severe).
(Definition of mellow from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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