Answer:

declarer

Answer	Crossword Clue
DECLARER	Dummy's opposite
DECLARER	South, in bridge columns
DECLARER	Avower

DECLARER	Bridge bidder
DECLARER	Dummy's bridge partner.
DECLARER	At bridge, the maker.
DECLARER	Bridge player.
DECLARER	Bridge player, at times
DECLARER	One possibly seeking a slam
DECLARER	One going through Customs, e.g.

Crossword

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