1.  To murmur or mutter with discontent; to make ill-natured complaints in a low voice and a surly manner. [1913 Webster]
"L'Avare, not using half his store,
Still grumbles that he has no more." [1913 Webster]

2.  To growl; to snarl in deep tones; as, a lion grumbling over his prey. [1913 Webster]

3.  To rumble; to make a low, harsh, and heavy sound; to mutter; as, the distant thunder grumbles. [1913 Webster]

   To express or utter with grumbling. [1913 Webster]

1.  The noise of one that grumbles. [1913 Webster]

2.  A grumbling, discontented disposition. [1913 Webster]
"A bad case of grumble." [1913 Webster]

grumble, v. & n.
--v.
1 intr. a (often foll. by at, about, over) complain peevishly. b be discontented.
2 intr. a utter a dull inarticulate sound; murmur, growl faintly. b rumble.
3 tr. (often foll. by out) utter complainingly.
4 intr. (as grumbling adj.) colloq. giving intermittent discomfort without causing illness (a grumbling appendix).
--n.
1 a complaint.
2 a a dull inarticulate sound; a murmur. b a rumble.

Derivative:
grumbler n. grumbling adj. grumblingly adv. grumbly adj.

Etymology:
obs. grumme: cf. MDu. grommen, MLG grommelen, f. Gmc

VB  be discontented, quarrel with one's bread and butter, repine, regret, wish one at the bottom of the Red Sea, take on, take to heart, shrug the shoulders, make a wry face, pull a long face, knit one's brows, look blue, look black, look black as thunder, look blank, look glum, take in bad part, take ill, fret, chafe, make a piece of work, grumble, croak, lament, cause discontent, dissatisfy, disappoint, mortify, put out, disconcert, cut up, dishearten.

N  lament, lamentation, wail, complaint, plaint, murmur, mutter, grumble, groan, moan, whine, whimper, sob, sigh, suspiration, heaving, deep sigh, cry, scream, howl, outcry, wail of woe, ululation, frown, scowl, tear, weeping, flood of tears, fit of crying, lacrimation, lachrymation, melting mood, weeping and gnashing of teeth, plaintiveness, languishment, condolence, mourning, weeds, willow, cypress, crape, deep mourning, sackcloth and ashes, lachrymatory, knell, deep death song, dirge, coronach, nenia, requiem, elegy, epicedium, threne, monody, threnody, jeremiad, jeremiade, ullalulla, mourner, grumbler, Noobe, Heraclitus, lamenting, in mourning, in sackcloth and ashes, sorrowing, sorrowful, mournful, tearful, lachrymose, plaintive, plaintful, querulous, querimonious, in the melting mood, threnetic, in tears, with tears in one's eyes, with moistened eyes, with watery eyes, bathed in tears, dissolved in tears, like Niobe all tears, elegiac, epicedial, de profundis, les larmes aux yeux, Int, heigh-ho!, alas!, alack!, O dear!, ah me!, woe is me!, lackadaisy!, well a day!, lack a day!, alack a day!, wellaway!, alas the day!, O tempora O mores!, what a pity!, miserabile dictu!, O lud lud!, too true!, tears standing in the eyes, tears starting from the eyes, eyes suffused, eyes swimming, eyes brimming, eyes overflowing with tears, if you have tears prepare to shed them now, interdum lacrymae pondera vocis habent, strangled his language in his tears, tears such as angels weep.

VB  lament, mourn, deplore, grieve, weep over, bewail, bemoan, condole with, fret, wear mourning, go into mourning, put on mourning, wear the willow, wear sackcloth and ashes, infandum renovare dolorem, give sorrow words, sigh, give a sigh, heave, fetch a sigh, waft a sigh from Indus to the pole, sigh 'like a furnace', wail, cry, weep, sob, greet, blubber, pipe, snivel, bibber, whimper, pule, pipe one's eye, drop tears, shed tears, drop a tear, shed a tear, melt into tears, burst into tears, fondre en larmes, cry oneself blind, cry one's eyes out, yammer, scream, mew, groan, moan, whine, roar, roar like a bull, bellow like a bull, cry out lustily, rend the air, frown, scowl, make a wry face, gnash one's teeth, wring one's hands, tear one's hair, beat one's breast, roll on the ground, burst with grief, complain, murmur, mutter, grumble, growl, clamor, make a fuss about, croak, grunt, maunder, deprecate, cry out before one is hurt, complain without cause.

VB  cry, roar, shout, bawl, brawl, halloo, halloa, hoop, whoop, yell, bellow, howl, scream, screech, screak, shriek, shrill, squeak, squeal, squall, whine, pule, pipe, yaup, cheer, hoot, grumble, moan, groan, snore, snort, grunt, vociferate, raise up the voice, lift up the voice, call out, sing out, cry out, exclaim, rend the air, thunder at the top of one's voice, shout at the top of one's voice, shout at the pitch of one's breath, thunder at the pitch of one's breath, s'_egosiller, strain the throat, strain the voice, strain the lungs, give a cry.