2 Results: verplappert:  Adjective   Inflection verplappern:  Verb, verplapperte, verplappert. Auxiliary: haben   Inflection 5 Translations:   German     English      verplappern     to prattle away       verplappernd     prattling away       verplappert     opened one's mouth too wide      prattled away       sich verplappern     to open one's mouth too wide