Acrid tasting is a flavor profile often associated with bitterness or a sharpness that leaves an unpleasant aftertaste in one's mouth. To describe this flavor with synonyms, one can refer to it as pungent, tangy, sour, or acidic. Other related words include harsh, sharp, and biting. One could also describe the taste as acerbic or caustic, both of which refer to a sharp, biting quality. Additionally, some might use the words bitter, tart, or astringent to describe the taste. Overall, there are many words that can be used to capture the intense and unpleasant taste of something acrid.