Acerbicly is an adjective which refers to expressions or comments that are sharply or bitterly critical in nature. Some synonyms for acerbicly include sarcastically, caustically, cuttingly, satirically, snarkily, sardonically, ironically, mordantly, scathingly, biting, and tartly. Each of these words has a slightly different connotation but all describe language that is harsh and intended to hurt or rebuff. When used properly, acerbic language can be an effective way to convey a point or persuade someone, but it should be used with caution as it can also damage relationships and hurt people's feelings.