bellyache
[noun]
Synonyms: stomachache, colic, collywobbles, gripe(s)
[verb]
Synonyms: gripe, beef, bitch, bleat, blow off, crab, fuss, squawk, yammer, yawp (or yaup)

[TahlilGaran] English Synonym Dictionary ▲

I. bel‧ly‧ache¹ /ˈbeli-eɪk/ noun [uncountable and countable] informal
a pain in your stomach Synonym : stomachache

[TahlilGaran] Dictionary of Contemporary English ▲

II. bellyache² verb [intransitive] informal
to complain a lot, especially about something unimportant Synonym : whinge
bellyache about
She never stops bellyaching about money.

[TahlilGaran] Dictionary of Contemporary English ▲

bellyache
v. To constantly complain.
Jim is always bellyaching about the amount of work he is required to do.

[TahlilGaran] English Idioms Dictionary ▲