What is the crossword answer for the clue: Abbr. on an envelope

ATTN - a 4 letter word may be the answer you are looking for!

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

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

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

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

Abbr. on an envelope

3 Character Answers:

ATT

ENC

ESQ

MRS

4 Character Answers:

ATTN