Rebuffing is defined as rejecting or refusing someone or something in an abrupt or blunt manner. The antonyms of rebuffing are accepting, welcoming, approving, receiving, allowing, admitting, and welcoming. Accepting means receiving or considering something as true or valid. Welcoming means receiving someone or something with warm and open arms. Approving means showing or expressing agreement with someone or something. Admitting means allowing someone or something to enter a place or become a member of a group. Allowing means giving permission or granting someone the freedom to do something. Rebuffing's antonyms are positive and inviting terms that express a sense of openness and acceptance.