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Synonyms

mellow

American  
[mel-oh] / ˈmɛl oʊ /

adjective

  • mellower,
    comparative
  • mellowest
    superlative
  1. soft, sweet, and full-flavored from ripeness, as fruit.

    Antonyms:
    green, raw, immature
  2. well-matured, as wines.

  3. soft and rich, as sound, tones, color, or light.

    Antonyms:
    harsh
  4. made gentle and compassionate by age or maturity; softened.

  5. friable or loamy, as soil.

  6. mildly and pleasantly intoxicated or high.

  7. pleasantly agreeable; free from tension, discord, etc..

    a mellow neighborhood.

  8. affably relaxed; easygoing; genial.

    a mellow teacher who is very popular with her students.


verb (used with or without object)

  • mellows,
    present (3rd person singular)
  • mellowed,
    past participle,  past
  • mellowing
    present participle
  1. to make or become mellow.

    Synonyms:
    improve, mature, develop

noun

  1. Slang. a state, atmosphere, or mood of ease and gentle relaxation.

verb phrase

  1. mellow out

    1. to become detached from worry, strife, stress, etc.; relax.

      After final exams let's go down to the beach and mellow out.

    2. to make more relaxed, agreeable, workable, etc.; soften or smooth.

      Chopin really mellows me out when I'm feeling tense.

mellow British  
/ ˈmɛləʊ /

adjective

  1. (esp of fruits) full-flavoured; sweet; ripe

  2. (esp of wines) well-matured

  3. (esp of colours or sounds) soft or rich

  4. kind-hearted, esp through maturity or old age

  5. genial, as through the effects of alcohol

  6. (of soil) soft and loamy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to make or become mellow; soften; mature

  2. (foll by out) to become calm and relaxed or (esp of a drug) to have a calming or relaxing effect on (someone)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does mellow mean? Mellow means soft, sweet, and full of flavor, usually in reference to ripe fruits. Mellow can also mean well matured, especially in reference to wine. Mellow can also mean soft and rich, usually in reference to sound, color, or musical tone. And mellow can describe a mild and pleasant intoxication or high. You’ll also see mellow used in reference to people. A mellow person is usually easy-going and relaxed. If they’ve mellowed over time, they’ve become more relaxed. In slang, mellow means a mood or atmosphere of relaxation. You might hear something like “Don’t harsh my mellow,” meaning “Don’t spoil my good mood.”Example: Luis became much more mellow after they left their stressful job.

Synonym Usage

See ripe.

Other Word Forms

Derived Forms

Inflected Forms

Adjectives

Participles

Conjugated Forms

Present

Past

Future


Etymology

Origin of mellow

First recorded in 1400–50; late Middle English mel(o)we, alteration (perhaps by dissimilation, in phrase meruw fruit ) of Middle English meruw, Old English meru “soft”


Explanation

When something becomes mellow, it gets softer or more relaxed. People are often said to mellow with age, meaning their aggressiveness, their sarcasm, and their short temper have given way to a more easygoing, genial manner. Wine and other foods mellow just like people, and can be described as "having mellowed" when they reach a full and pleasing flavor, without sharpness. The laid-back quality of jazz pieces like John Coltrane’s “My Favorite Things” is often described as mellow. Sometimes the musicians who play them are mellow too. When people are slightly and pleasantly intoxicated, they often claim to be feeling mellow, having attained a relaxed and agreeable state without even having to grow old.

Keep Reading on Vocabulary.com

Vocabulary lists containing mellow

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

British producer Jamie xx adds production to the glittery electropop tune “Every Single Weekend,” while Panda Bear lends his distinctive high tenor to the mellow indie-pop track “Highfield.”

From The Wall Street Journal ● Oct. 20, 2026

David Rooney at The Hollywood Reporter, external is slightly more positive, noting that the film is "muted but never dull" and an "appealingly mellow watch".

From BBC ● Aug. 27, 2026

The reading, which followed a mellow consumer-price index print the day before, is resetting expectations about what the Federal Reserve will do next month—and in a positive way.

From The Wall Street Journal ● Aug. 13, 2026

A muscular female soprano — Chi’cas Reid — dominates the vocal mix, with Ayers’ mellow baritone in a supporting role.

From Los Angeles Times ● May 19, 2026

I kicked through them the way I did each fall, watching them fly up in swirls of yellow and red, breathing in their mellow smell.

From "The Old Willis Place" by Mary Downing Hahn

Fall is mellower, even if the hills might be a little browner.

From Los Angeles Times ● Sep. 8, 2026

The inner fire and determination remain, but he is mellower, more mature these days.

From BBC ● Mar. 23, 2026

They were considerably mellower than the originals—we got a taste of what those might have been like from a brief preview set performed by the blues guitarist and singer Memphis Gold.

From The Wall Street Journal ● Dec. 9, 2025

A cousin of the sitar, but with a slightly mellower tone, the sarod is fretless, so pitch sliding, almost like a steel guitar does, is a vital component of the technique.

From Seattle Times ● Sep. 8, 2022

When he described visiting the Mani, his voice became even mellower than usual, and his eyes glistened.

From "Middlesex: A Novel" by Jeffrey Eugenides

Often when I cook shrimp, they’re the sweetest, mellowest elements on the plate, sharpened by the likes of garlic and lemon.

From Seattle Times ● Aug. 22, 2022

Your dad, Luis A Miranda, works in politics and has a documentary coming out about him… Although I famously have no chill, I always say I’m the mellowest member of my family.

From The Guardian ● Nov. 22, 2020

Even the mellowest teens are raging against the pandemic quarantine.

From Washington Post ● Apr. 23, 2020

Koenig, who carries himself like the mellowest dude at a black-tie event, doesn’t mind if a listener takes something real in his lyrics for something imagined.

From Los Angeles Times ● Apr. 25, 2019

I say, but the master-at-arms seems to be ignoring me now, so I direct the question to the skull with a rose in its mouth, figuring it might be the mellowest one.

From "Challenger Deep" by Neal Shusterman

With De Kooning’s paintings, there is an evolutionary throughline, where the bravura of the 1970s mellows into more contemplative, flowing compositions in the ’80s.

From The Wall Street Journal ● Nov. 6, 2026

"Can y'all come straighten it up over here? It's not looking luxurious," Sean "Diddy" Combs says in a voice note to his personal assistants as R&B music mellows in the background.

From BBC ● Jul. 2, 2025

A generous amount of ginger, cut into matchsticks, mellows and softens as it cooks, and adds a brightness that perks up the deeper flavors.

From Washington Times ● Sep. 14, 2023

The spinach mellows everything out, and adding heavy cream to the eggs helps them to bake up nice and fluffy, kind of like a quiche, instead of dry and gritty.

From Seattle Times ● Jul. 18, 2023

When Faith's low doorway leads into the church, Light from austere saints mellows dusty gloom, Sad music echoes in the stony heavens, And this bleak pavement masks a charnel hell.

From A Man in the Open by Roger Pocock

They have since mellowed to a recent 6.3%.

From Barron's ● Apr. 20, 2026

The grandpa I knew was a very mellowed man, so I got to experience more of the charm side.

From BBC ● Apr. 10, 2026

Mr. Mamdani’s election was taken as a sign that the socialist movement had mellowed and matured.

From The Wall Street Journal ● Jan. 5, 2026

While it’s unlikely that Klodjan will be up for a statuette, the powers that be have mellowed to the idea of AI-generated music being worthy of praise.

From Salon ● Jul. 28, 2025

Here the sun mellowed, took on the cast of late afternoon, and the shadows seemed to fall a bit longer; the forest had sunk into a deeper silence, magnifying what sounds did arise.

From "Ash" by Malinda Lo

The overall mellowing of the forecast comes as the extent of coastal damage remains less than what some officials feared.

From Los Angeles Times ● Oct. 12, 2026

“Dancing on the Ceiling” does the opposite, starting with very verbose Art Tatum-style arpeggios in the verse but then mellowing out in the chorus, and quoting “All This and Heaven Too.”

From The Wall Street Journal ● Apr. 29, 2026

One of the main differences people cite with leftovers is a mellowing of spices.

From Washington Post ● Mar. 3, 2023

Though Harley and Ivy’s honeymoon phase is already beginning to wane as Harley Quinn’s third season opens, the mellowing of their relationship’s something the series never really frames as a sign of danger.

From The Verge ● Jul. 27, 2022

I was listening to Lana Del Rey then, and tonight I’m mellowing out to the Chromatics cover of “I’m on Fire.”

From "What If It's Us" by Becky Albertalli and Adam Silvera

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