Gab fest is a term commonly used to describe a long, lively, and chatty conversation. If you're looking for synonyms for this phrase, you'll find that there are plenty of words that can capture the same meaning. One alternative could be a powwow, which is another term for a meeting or discussion. Another synonym for gab fest is a chinwag, which implies a more relaxed and informal conversation. A heart-to-heart, meanwhile, suggests a deep and meaningful conversation between friends or family members. Other options include a discussion, exchange, talkathon, or colloquy. There are plenty of ways to describe an engaging and dynamic conversation, so choose the synonym that best fits your particular situation.