bellyaching

/B EH1 L IY0 EY1 K IH0 NG/
verb
  1. 1

    To unnecessarily complain or whine, often about simple matters.

    โ€œQuit bellyaching about the problem and help us fix it.โ€

noun
  1. 1

    Whining and complaining, often contrived to evoke pity or shirk responsibility.

    โ€œQuit your bellyaching and get back to work!โ€

Source: https://en.wiktionary.org/wiki/bellyache, https://en.wiktionary.org/wiki/bellyaching