Answer:

STAMPED

Answer	Crossword Clue
STAMPED	Ready to mail
STAMPED	Readied for mailing
STAMPED	Ready for mailing, maybe

STAMPED	Ended for good, with "out"
STAMPED	Part of SASE
STAMPED	Ready for mailing.
STAMPED	Characterized
STAMPED	Imprinted
STAMPED	Validated
STAMPED	Ready for mailing
STAMPED	Ready for the post office

STAMPED	Like some feet and envelopes
STAMPED	Clog danced
STAMPED	Like many passports
STAMPED	Okayed, in a way
STAMPED	Ready to post
STAMPED	Ready for posting

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.