"Chupi"

Translation: Underpants

[AJstensaas]

Underwear should also be accepted

[NattKullav1]

"Pants" should be accepted here too.

[Caroline202140]

Undewear or panties would be acceptable but not pants, for that would mean trousers

[Ivoryblossum]

Natt is right. Pants are only trousers in U.S. English. There are many, many other varieties of English. But I will agree that when I say trousers consistently for the long-legged outerwear in the U.S., I frequently get funny looks.

[ArgusC]

the hint also gives "knickers" but won't accept it has an answer.

[MitkaM]

I've been told by a native speaker that it's not polite to use this word in public. People say instead "nguo ya ndani" when talking about underwear in public.