The term 'lacking pizzazz' can be described by four crossword solutions: FLAT, DRAB, BLAH, and ANEMIC. FLAT is an adjective meaning having no interesting features or qualities, while DRAB is an adjective meaning dull and uninteresting. BLAH is an informal adjective meaning boring and uninspiring, and ANEMIC is an adjective meaning lacking vitality or energy. All of these words describe a lack of pizzazz, which is a quality of being exciting, vibrant, and interesting.