To assume responsibility for the quality or performance of:
Warrant is defined as to guarantee, assure or give someone authority to do something.
To prove to be true by demonstration, evidence, or testimony; confirm or substantiate
To back a cause, party etc. mentally or with concrete aid.
To substantiate is to prove a claim to be true or back up a claim with evidence.
The definition of sponsor is to provide funding for something, or to pledge to fund something.
To support by aid, influence, protection, etc.
To establish is defined as to start, create or bring about something.
To proclaim one's support, opposition, choice, or opinion:
To support or establish the certainty or validity of; verify:
To mention or bring forward as support, illustration, or proof:
Back is defined as to support or to move in a backward motion.
The definition of aver is to declare or affirm something to be true with a strong sense of confidence.
The definition of attest is to affirm something to be true or to authenticate.
To declare solemnly in the name of God or of something held sacred
To declare openly or admit frankly
Depose is defined as to forcefully and suddenly remove someone from office, or to testify or present evidence under oath in a legal proceeding.
To assert or maintain:
To accept into a religious order
To proclaim or assert; declare.
To protest is to make clear you object to something, especially if you do so publicly through demonstrations.
To tell a court what pertinent information to a case one has, while under oath, and while the defendant is present.
To refuse to believe; reject:
To deny the truth or validity of
To turn down (an applicant, as for a job); refuse to accept.
To give up (a claim, right, belief, etc.), usually by a formal public statement
To throw away, abandon, or get rid of as no longer valuable or useful
To refuse to acknowledge or pay (a debt or obligation)
Find another word for vouches. In this page you can discover 38 synonyms, antonyms, idiomatic expressions, and related words for vouches, like: guarantees, witnesses, warrants, verifies, supports, substantiates, sponsors, proves, maintains, establishes and endorses.