FURY' (4 letters) The term SHOW GRUMPINESS can be summarized by two crossword solutions, POUT and FURY. POUT is an expression of displeasure or discontent, usually characterized by a downturned mouth and a sullen attitude. FURY is a strong emotion of extreme anger, often accompanied by violent behavior. Together, these two words describe a person who is displaying their grumpiness in an outwardly visible way.