Gaggling is often used to describe the sound made by a flock of geese, which is why synonyms for the word typically relate to birds or noise. Some possible alternatives include honking, cackling, clucking, squawking, or fussing. These words convey a sense of clustering or chatter, where a group of creatures or people are gathered together and communicating in an excited or energetic way. Other related words might include gossiping, chattering, babbling, or blathering, which suggest a more active or social kind of conversation. Whatever the context, using a diverse range of synonyms can help to expand your vocabulary and make your writing or speech more interesting and engaging.