Final answer:
The adjective 'acrid' refers to something that is bitter or unpleasant in taste or smell, commonly associated with harsh, pungent odours or tastes that are disagreeable.
Step-by-step explanation:
The adjective 'acrid' means bitter or unpleasant in taste or smell. When something is described as acrid, it typically refers to a sharp, pungent experience that is often found to be disagreeable. This term is commonly used in the context of smells and tastes. For instance, certain chemicals and smoke can have an acrid odour, which is harsh and can cause discomfort to the nose or throat. Similarly, some substances have an acrid taste, which can be intensely unpleasant and linger in the mouth. Neither sweet, pleasant, soft, smooth, nor loud sounds have anything to do with the adjective acrid.