을 넣어

put it in; add it

→ 을
phrase Uncommon #11,729
put it in; add it 을 marks the object, and 넣어 is the informal-style form of 넣다, meaning “put in” or “add.” The exact phrase 을 넣어 is informal and can be used as a command or request to put something in. More polite forms include 을 넣어 주세요 and 을 넣어 주십시오.
KO: 면허증을 넣어 주십시오.
EN: Please put your license in.

면허증을 넣어 주십시오

Please insert your driver's license.

— 제5원소 (1997)