Answer:

validate

Answer	Crossword Clue
VALIDATE	Make lawful
VALIDATE	Confirm
VALIDATE	Act as a notary, in a way

VALIDATE	Establish as genuine
VALIDATE	Make legal
VALIDATE	Give legal force to.
VALIDATE	Confirm.
VALIDATE	Prove
VALIDATE	Confirm, as identification
VALIDATE	Give credence

Crossword

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