IPA: /ˈbæblər/
KK: /ˈbæblər/
A person who talks a lot, often in a silly or nonsensical way.
She is known as a babbler because she can't stop talking about everything.
Babbler → It is formed from "babble" (of imitative origin, meaning to talk rapidly and continuously in a foolish or excited way) and the suffix "-er" (meaning a person who). A babbler is a person who talks incessantly or foolishly.
Think of someone who talks rapidly and continuously, like a 'babbler' — the '-er' just means a person who babbles.