add one's signature to after another's to attest authenticity; "You must countersign on this line of the contract"
Frequently asked questions for countersign:
How many solutions are there for the crossword clue "COUNTERSIGN"?
There are 143 solutions. The longest is LETTER OF INTRODUCTION with 20 letters, and the shortest is X with 1 letters.
How can I find the solution for "COUNTERSIGN"?
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