Answer: letmein

AnswerCrossword Clue
LETMEIN

"Open the door!"

LETMEIN

Door banger's demand

LETMEIN

Shout during a lockout

LETMEIN
Rapper's demand
LETMEIN
Knocker's request
LETMEINWhat "knock knock" may mean
LETMEIN"Open up!"
LETMEINBig Bad Wolf's demand