Superlative form of mellow: most mellow.(adjective)
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Use "mellowest" in a sentence
"It was clear, soft, and mellow as the mellowest bell ever cast by eastern artificers of old time to call worshippers to prayer."
"One of the best (and mellowest) cuts on Budden's hotly anticipated "Mood Muzik 4" mix tape, this features a standout turn from Clipse member (and new Kanye BFF) Pusha T. Nikki & Rich featuring Fabolous: "City Lights""
"It's the mellowest album to date by the veteran guitarist (who serves as an Adjunct Professor of Music at NYU), smoothly interspersing well-crafted originals and well-selected "covers" (as opposed to standards), including Abbey Lincoln 's "Throw It Away" and Billy Eckstine 's "I Want to Talk About You.""