The undercover law enforcement

Underpants (usually of a female). Originally an Australian slang term, Americans are finally picking it up due to the word ‘panties’ being creepy AF.

The undergarments warn by both males and females.

in deaf culture, the word "understand" is shortened for quick communication.

oh undies if they get too dirty flip them inside out and they are good for another week!!!

underwear, especially women's underware

High school underclassmen (especially freshmen and sophomores).