"bellyache" in the noun sense
1. stomachache, stomach ache, bellyache, gastralgia
an ache localized in the stomach or abdominal region
"bellyache" in the verb sense
1. gripe, bitch, grouse, crab, beef, squawk, bellyache, holler
complain
"What was he hollering about?"
Source: WordNet® (An amazing lexical database of English)
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