ぱんぱん

ぱんぱん
adverb, onomatopoeia
stuffed to capacity; bulging; packed full
informaldescriptive
1. stuffed full; bulging; packed to capacity
Mimetic word describing something stretched or filled to its limit — a bag packed until it bulges, a stomach so full it is taut, or a schedule with no free slots. Suggests the thing is about to burst or has no more room.
(なか)ぱんぱんだ。
My stomach is stuffed.
A bag packed full of stuff.
My schedule is packed solid and I have no time to rest.

Casual mimetic word suggesting maximum capacity or fullness. Used with + なる (to become stuffed) or as a prenominal modifier.

Common patterns

Note: ぱんぱん is also used for a light clapping or patting sound (ぱんぱん()(たた) — to clap), though the 'stuffed full' meaning is more common in everyday speech.