All authenticate synonyms

verb authenticate

• attest — To attest something or attest to something means to say, show, or prove that it is true.
• verify — to prove the truth of, as by evidence or testimony; confirm; substantiate: Events verified his prediction.
• validate — to make valid; substantiate; confirm: Time validated our suspicions.
• substantiate — to establish by proof or competent evidence: to substantiate a charge.
• corroborate — To corroborate something that has been said or reported means to provide evidence or information that supports it.
• authorize — If someone in a position of authority authorizes something, they give their official permission for it to happen.
• prove — to establish the truth or genuineness of, as by evidence or argument: to prove one's claim.
• certify — If someone in an official position certifies something, they officially state that it is true.
• confirm — If something confirms what you believe, suspect, or fear, it shows that it is definitely true.
• justify — to show (an act, claim, statement, etc.) to be just or right: The end does not always justify the means.
• vouch — to support as being true, certain, reliable, etc. (usually followed by for): Her record in office vouches for her integrity.
• accredit — If an educational qualification or institution is accredited, it is officially declared to be of an approved standard.
• warrant — authorization, sanction, or justification.
• guarantee — a promise or assurance, especially one in writing, that something is of specified quality, content, benefit, etc., or that it will perform satisfactorily for a given length of time: a money-back guarantee.
• cheque — A cheque is a printed form on which you write an amount of money and who it is to be paid to. Your bank then pays the money to that person from your account.
• check — Check is also a noun.
• genuine — possessing the claimed or attributed character, quality, or origin; not counterfeit; authentic; real: genuine sympathy; a genuine antique.
• authorise — to give authority or official power to; empower: to authorize an employee to sign purchase orders.
• bear out — If someone or something bears a person out or bears out what that person is saying, they support what that person is saying.