What is the crossword answer for the clue: Reply to a knock

ENTER - a 5 letter word may be the answer you are looking for!

ITSOPEN - a 7 letter word may be the answer you are looking for!

WHOISIT - a 7 letter word may be the answer you are looking for!

COMEIN - a 6 letter word may be the answer you are looking for!

Reply to a knock

5 Character Answers:

ENTER

6 Character Answers:

COMEIN

7 Character Answers:

ITSOPEN

WHOISIT