Synonyms for Moan:

n.

fizz, drone, babble, putter, gurgle, grunt, cluck. rant, protest, ululation, bay, yowl, complaint, sounds, remonstrance. kick up a fuss/stink/argument, take something further, raise the roof, lodge, complain. clunk, pitch, hum, thud. cry out, Ouch, OW. shed tears, sorrow. groan, complaint (noun)
wail, whine, sigh, lament, cry.
moan (noun)
sough, groan.
ululation (noun)
ululation.
voice (noun)
exclamation, enunciation, pronunciation, articulation, speech, emission, utterance, intonation.

v.

cry (verb)
cheer, bawl, howl, whoop, holler, shriek, shout, scream, call, growl, yell.
groan, complain (verb)
bemoan, grieve, bewail, mourn.
lament (verb)
sniffle, ululate, weep, bewail, decry, sigh, lament, snuffle, agonize, grieve, mourn, groan, clamor, long, whimper, cry, whine, bemoan, wail.
voice (verb)
enunciate, articulate, whisper, speak, pronounce, utter, voice, mutter, murmur, exclaim, emit, intone.

Other synonyms:

putter, fizz, ululation, clunk, Ouch, complain, OW, remonstrance. cry out, thud, rant, yowl. babble, gurgle, drone, protest. cluck. grunt. lodge. pitch. buzz
hum.
cry
shed tears, weep.
lament
lament.
Other relevant words:
complaint, sorrow, bay, hum, yowl, thud, sough, protest, Ouch, cry out, shed tears, OW, ululation, grunt, complain.

Usage examples for moan

  1. " Yea, surely," said the man, " and greatly did she moan and cry; but even now another knight is fighting with him to deliver the lady; ride on and thou shalt find them fighting still." – The Legends Of King Arthur And His Knights by James Knowles
  2. Then he would toss and moan and give vent to his sorrow in passionate complaints. – The Sport of the Gods by Paul Laurence Dunbar
  3. He turned into it- and there came a little cry, a moan almost, of relief. – The Further Adventures of Jimmie Dale by Frank L. Packard