Synonyms for Chitchat (same or very similar meaning)
WordNet sense 1 (light informal conversation for social occasions):
causerie, gab, gabfest, gossip, tittle-tattle, chin-wag, chin-wagging, small talkWordNet sense 2 (talk socially without exchanging too much information):
chat, chatter, confab, confabulate, jaw, natter, visit, chaffer, claver, chew the fat, shoot the breezeFrom the ODE community, based on WordNetadd/edit