Enter a clue or pattern or both:
The Clue
Certify, in a way (8 letter answer)
The Answer
NOTARIZE
Tags
Notes
The answer NOTARIZE is so rare that it appears less than once every 2900 puzzles.
Related Clues
Authenticate
Certify
Authenticate, in a way
Stamp and sign, perhaps
Definition
NOTARIZE as a verb:
1. (notarize, notarise) = authenticate as a notary; "We had to have the signature notarized"