The phonetic transcription of "chatterbox" is /ˈtʃæt.ə.bɒks/ in British English and /ˈtʃæt̬.ɚ.bɑːks/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "chatterbox": gossip, windbag, blabbermouth.
Example usage of "chatterbox": "My sister is a chatterbox, she never stops talking.". More examples on the page.