[1] : The Collaborative International Dictionary of English v.0.48

mellow \mel"low\, a. compar. mellower; superl. mellowest.
   oe. melwe; cf. as. mearu soft, d. murw, prov. g. mollig
   soft, d. malsch, and e. meal flour.
   1913 webster
   1. soft or tender by reason of ripeness; having a tender
      pulp; as, a mellow apple.
      1913 webster

   2. hence:
      a easily worked or penetrated; not hard or rigid; as, a
          mellow soil. "mellow glebe." --drayton
      b not coarse, rough, or harsh; subdued; soft; rich;
          delicate; -- said of sound, color, flavor, style, etc.
          "the mellow horn." --wordsworth. "the mellow-tasted
          burgundy." --thomson.
          1913 webster

                the tender flush whose mellow stain imbues
                heaven with all freaks of light.  --percival.
          1913 webster

   3. well matured; softened by years; genial; jovial.
      1913 webster

            may health return to mellow age.      --wordsworth.
      1913 webster

            as merry and mellow an old bachelor as ever followed
            a hound.                              --w. irving.
      1913 webster

   4. warmed by liquor; slightly intoxicated. --addison.
      1913 webster
see also:
mellower mellowest 

[2] : The Collaborative International Dictionary of English v.0.48

mellow \mel"low\, v. t. imp.  p. p. mellowed; p. pr.  vb.
   n. mellowing.
   to make mellow. --shak.
   1913 webster

         if the weather prove frosty to mellow it the ground,
         they do not plow it again till april.    --mortimer.
   1913 webster

         the fervor of early feeling is tempered and mellowed by
         the ripeness of age.                     --j. c.
                                                  shairp.
   1913 webster
see also:
mellowed mellowing 

[3] : The Collaborative International Dictionary of English v.0.48

mellow \mel"low\, v. i.
   to become mellow; as, ripe fruit soon mellows. "prosperity
   begins to mellow." --shak.
   1913 webster

[4] : WordNet (r) 2.0

mellow
     adj 1: unhurried and relaxed; "an easygoing pace"; "a mellow
            conversation" syn: easygoing, laid-back
     2: having a full and pleasing flavor through proper aging; "a
        mellow port"; "mellowed fruit" syn: mellowed
     3: having attained to kindliness or gentleness through age and
        experience; "mellow wisdom"; "the peace of mellow age"
        syn: mellowed
     4: having or suggesting softness and richness in quality; "a
        mellow sound"; "the mellow air brought in the feel of
        imminent autumn"- thomas hardy; "a mellowing sun" syn: mellowing
     5: slightly and pleasantly intoxicated from alcohol or a drug
        especially marijuana syn: high
     adv : obsolete in a mellow manner syn: mellowly
     v 1: soften, make mellow; "age and experience mellowed him over
          the years"
     2: become more relaxed, easygoing, or genial; "with age, he
        mellowed" syn: melt, mellow out
     3: make or grow more mellow; "these apples need to mellow a
        bit more"; "the sun mellowed the fruit"
see also:
easygoing laid-back mellowed mellowing high mellowly 
melt mellow out 

[5] : Moby Thesaurus II by Grady Ward, 1.0

245 moby thesaurus words for "mellow":
   achingly sweet, addled, advance, affable, age, aged, agreeable,
   agreeable-sounding, amiable, amicable, appealing, ariose, arioso,
   attain majority, bear fruit, beery, bemused, besotted, blind drunk,
   blissful, bloom, blossom, blow, bring to maturity, canorous,
   cantabile, catchy, cheerful, come of age, come to fruition,
   come to maturity, compatible, complaisant, congenial, cordial,
   crapulent, crapulous, creamy, cushion, delicate, delicious,
   desirable, develop, developed, dizzy, drenched, drunk, drunken,
   dulcet, ease, easy, easygoing, eggshell, en rapport, enjoyable,
   euphonic, euphonious, euphonous, evolute, evolve, fair,
   fair and pleasant, far-gone, felicific, felicitous, fine,
   fine-toned, flat, flavorful, fledge, flourish, flower, fluff,
   flustered, fou, friendly, full, full-blown, full-flavored,
   full-fledged, full-grown, fully developed, gay, genial, gentle,
   giddy, glorious, gloss, golden, golden-tongued, golden-voiced,
   good, good-natured, goodly, gracious, grateful, gratifying, grow,
   grow up, happy, harmonious, heart-warming, honeyed, in full bloom,
   in liquor, inebriate, inebriated, inebrious, intoxicated,
   iridescent, jolly, jovial, juicy, knead, laxate, leave the nest,
   light, likable, limber, limber up, liquid, loosen, luscious, mash,
   massage, maturate, maturated, mature, matured, maudlin, melic,
   mellifluent, mellifluous, mellisonant, mellowed, mellowy, melodic,
   melodious, merry, mild, milden, mollified, mollify,
   mother-of-pearl, muddled, music-flowing, music-like, musical,
   muted, nacreous, nappy, nice, nonresistive, nonrigid, opalescent,
   pale, pastel, patinaed, pearly, plangent, pleasant,
   pleasant-sounding, pleasing, pleasurable, pleasure-giving,
   pleasureful, plump, progress, pulp, pulsing, pure, quiet,
   reach its season, reach manhood, reach maturity, reach twenty-one,
   reach voting age, ready, reeling, relax, resonant, resonating,
   rewarding, rich, ripe, ripen, ripened, rolling, sad, satisfying,
   season, seasoned, semigloss, settle down, shake up, shikker,
   silver-toned, silver-tongued, silver-voiced, silvery, simple,
   singable, smash, sober, sodden, soft, soft as putty, soft-colored,
   soft-hued, soften, soften up, softened, somber, songful, songlike,
   sonorous, sotted, squash, subdue, subdued, subtle, supple, sweet,
   sweet-flowing, sweet-sounding, sweeten, temper, tempered, tender,
   tenderize, throbbing, tiddly, tipsy, toga virilis, tone down,
   tunable, tune down, tuneful, under the influence, vibrant,
   vibrating, warm, wax, welcome, whisper-soft

Mellow >> M Words
Mellow, definition of term: Mellow
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