The term 'not piquant' can be described by three crossword solutions: MILD (4 letters), BLAH (4 letters), and INSIPID (7 letters). MILD is an adjective meaning not strong or intense in flavor, color, or strength. BLAH is an adjective meaning lacking in vitality, interest, or significance. INSIPID is an adjective meaning having a taste that is lacking in flavor or interest. All three words describe something that is not piquant, which means having a sharp, spicy taste.