In a chatting manner; while engaging in chat or conversation; characterized by continuous talking.
From chatting (present participle of chat) + -ly (adverb suffix). Similar to 'chatteringly,' it describes how an action is performed in a chatty manner.
Both 'chattily' and 'chattingly' exist in English with subtle differences—'chattily' emphasizes the friendly tone, while 'chattingly' emphasizes the continuous action of chatting itself!
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