Yakkity is a slang word that refers to excessive talking or gossiping. Synonyms for yakkity include chattering, blabbering, gabbing, prattling, and jabbering. These words are often used to describe someone who talks non-stop, often without saying much of value. Other synonyms include babbling and rattling on, which imply a lack of focus or coherence. Yakkity-yak is also a common phrase that means the same thing, and can be used playfully or in a more serious context. Whatever word you choose, it's clear that excessive talking can be annoying or distracting, so it's important to know when to stop yakkity-ing and start listening.