Vocabulary What does べらべら mean? べらべら means chattering away, running one’s mouth (fluent speech; or spilling everything). Quick factsReadingべらべら べらべらべらべらTOPICSchattering away, running one’s mouth (fluent speech; or spilling everything)Example sentencesあの人(ひと)は友達(ともだち)の秘密(ひみつ)を、誰(だれ)にでもべらべらしゃべってしまう。That person blabs his friends’ secrets to anyone.