What is the crossword answer for the clue: Sign on the dotted line

INK - a 3 letter word may be the answer you are looking for!

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

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

Sign on the dotted line

3 Character Answers:

INK

5 Character Answers:

AGREE

7 Character Answers:

ENDORSE