sing, hum, whistle, whimper, drone, cry, mewl, moan, murmur, grumble, snivel, complain, grouse*, gripe*, beef*.
"whine." YourDictionary, n.d. Web. 15 May 2018. <http://thesaurus.yourdictionary.com/whine>.
whine. (n.d.). Retrieved May 15th, 2018, from http://thesaurus.yourdictionary.com/whine
To cry with soft, intermittent, often plaintive sounds:
To express negative feelings, especially of dissatisfaction or resentment: