Blabber/ˈblæbər/ Definition 1 of 2Pro Tip 1/3Talkative Non-stop Used when someone is talking excessively without pausing, often not logically. During the meeting, he just blabbered away, ignoring the agenda. Pro Tip 2/3Not Serious Typically signifies conversation that is not meant to be taken seriously or as factual. Ignore him; he likes to blabber without knowing the facts. Pro Tip 3/3Filler Speech Often used to describe speech that fills silence without adding value. Whenever she's unsure, she starts to blabber instead of remaining silent.