The term 'ACT GLOOMY' can be broken down into three crossword solutions: MOPE (4 letters), DREAR (5 letters), and GUS (3 letters). MOPE is a verb meaning to feel or show dejection or apathy. DREAR is an adjective meaning dismal, cheerless, or gloomy. GUS is a noun referring to a person who is clumsy or awkward. Together, these words describe a person who is feeling and showing dejection, in a dismal and clumsy manner.