Past tense of chitchat; engaged in casual, light conversation or gossip.
From chitchat (reduplicative origin) plus the regular past tense suffix -ed. The verb form emerged in English as chitchat became established as both noun and verb.
English speakers invented the verb form 'chitchatted' so readily because the reduplicative sound of 'chitchat' naturally suggests action, showing how onomatopoetic words easily become verbs.
Complete word intelligence in one call. Free tier — 50 lookups/day.