Mellow Definition

mĕlō

mellowed, mellowest, mellows, mellower

adjective

mellowest, mellower

Soft, sweet, and juicy because ripe.

Webster's New World

Suggesting softness or sweetness.

American Heritage

Full-flavored; matured; not acid or bitter.

Webster's New World

Full, rich, soft, and pure; not harsh.

Webster's New World

Softened and made gentle, understanding, and sympathetic by age and experience.

Webster's New World

Synonyms:

Antonyms:

verb

mellowed, mellows

To make or become mellow.

American Heritage

To make or become mellow.

Webster's New World

To make mellow; to relax or soften.

Wiktionary

Synonyms:

noun

A relaxed mood.

Wiktionary

Synonyms:

Other Word Forms of Mellow

Base Form:

mellow

Comparative:

mellower

Superlative:

mellowest

From Middle English melowe, melwe (“soft, sweet, juicy"), variant of Middle English merow, merwe (“soft, tender"), from Old English meru, mearu (“tender, soft, callow, delicate, frail"), from Proto-Germanic *marwaz (“mellow"), from Proto-Indo-European *mer(w)- (“to rub, pack"). Cognate with Middle Dutch meru (“tender"), German mürbe (“tender, soft"), Swedish mör (“tender; aching"), Icelandic meyr (“tender").

From Wiktionary
Middle English melwe perhaps from melowe oblique case of mele ground grain, meal meal¹

From American Heritage Dictionary of the English Language, 5th Edition