The crossword solution for the term SUFFIX WITH GAB OR SONG is FEST, which is a four-letter word. The term FEST is derived from the Latin word festus, meaning 'JOYOUS' or 'FESTIVE'. It is commonly used as a suffix to describe an event or gathering that is characterized by music, dancing, and other forms of entertainment. For example, a gabfest is a gathering of people who talk and joke around, while a songfest is a gathering of people who sing songs.