The term 'bitter-tasting' can be described using four different crossword solutions: ACRID (5 letters), ACIDIC (6 letters), ACERB (5 letters), and ACERBIC (7 letters). ACRID is an adjective that means having a sharp, pungent smell or taste. ACIDIC is an adjective that means having the properties of an acid, especially a sour taste. ACERB is an adjective that means sharp or severe in taste or manner. ACERBIC is an adjective that means having a sharp, sour, or bitter taste or manner. All four of these words describe something that has a bitter taste.