speak, converse, chat, discuss, debate, communicate, confide, negotiate, lecture, address, orate, sermonize, prattle, gab, natter, yak
chatter - jabber - babble - ramble - blather - prate - yammer - gab - waffle - twaddle
To prattle means to talk at length in a foolish, trivial, or childish way, often without much real content or purpose. It typically suggests light, sometimes irritating chatter that may be irrelevant to the situation or lack depth and seriousness. The term can describe both friendly, idle conversation and annoying, meaningless babble, depending on tone and context. It is often used when someone keeps speaking simply to fill silence, to amuse themselves, or without noticing that others are not interested. Prattle can be affectionate when referring to children, but critical when applied to adults.