"blab" in German to blab plaudern schwafeln Detailed translations for "blab" to blab 1. to sb. to blab plaudern{intransitive verb} So... you always blab to watch people react. Source: opensubtitles.org Corpus by OPUS Request review Also... Sie plaudern immer Dinge aus, um die Reaktion der Leute zu sehen. 2. other to blab(also: to babble, to smatter, to waffle, to blather) schwafeln