Answer:

vower

Answer	Crossword Clue
VOWER	One who makes promises
VOWER	One taking an oath
VOWER	Party to a promise

VOWER	One who promises
VOWER	Oath giver
VOWER	Bride or groom
VOWER	He swears
VOWER	Oath taker

Crossword

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