To authenticate or verify in writing.
To attest that a product, service, organization, or person has met an official standard.
To attest to (a fact) as the truth.
To falsely produce what appears to be official or valid; to produce a forged copy of.
Of a turn or river card, to invalidate a player's hand by making a better hand on the board.
Inauthentic.
False, especially of money; intended to deceive or carry appearance of being genuine.
Assuming the appearance of something; deceitful; hypocritical.
A non-genuine article; a fake.
One who counterfeits; a counterfeiter.