i Register
In some senses, tummy is marked as slang, colloquial, US, euphemistic. Watch for register when choosing this word.
ADJ
empty, full
TUMMY + VERB
rumble
TUMMY + NOUN
ache, bug, trouble, upset
PREP
in the/your ~
After eating too much cake, she felt a pain in her tummy.
ADJ
bulging, fat, flat
VERB + TUMMY
pull in
TUMMY + NOUN
muscles
PREP
on the/your ~