To attest to (a fact) as the truth.
To attest that a product, service, organization, or person has met an official standard.
To authenticate or verify in writing.
To cause repulsion or dislike in; to disgust.
To ward off (a malignant influence, attack etc.).
To drive back (an assailant, advancing force etc.).
To reject, put off (a request, demand etc.).
To save (a shot).
To force away by means of a repulsive force.