Babble
Middle English: from Middle Low German babbelen, or an independent English formation, as a frequentative based on the repeated syllable ba, typical of a child's early speech.
wiktionary
From Middle English babelen, from Old English *bæblian, also wæflian(“to talk foolishly”), from Proto-Germanic *babalōną(“to chatter”), from Proto-Indo-European *bʰa-bʰa-, perhaps a reduplication of Proto-Indo-European *bʰeh₂-(“to say”), or a variant of Proto-Indo-European *baba-(“to talk vaguely, mumble”), or a merger of the two, possibly ultimately onomatopoetic/mimicry of infantile sounds. Cognate with Old Frisian babbelje(“to babble”), Old Norse babbla(“to babble”) (Swedish babbla), Middle Low German babbelen(“to babble”), Dutch babbelen(“to babble, chat”), German pappeln and babbeln(“to babble”).
etymonline
babble (v.)
mid-13c., babeln "to prattle, utter words indistinctly, talk like a baby," akin to other Western European words for stammering and prattling (Swedish babbla, Old French babillier, etc.) attested from the same era (some of which probably were borrowed from others), all probably ultimately imitative of baby-talk (compare Latin babulus "babbler," Greek barbaros "non-Greek-speaking"). "No direct connexion with Babel can be traced; though association with that may have affected the senses" [OED]. Meaning "to talk excessively" is attested from c. 1500. Related: Babbled; babbler; babbling.
babble (n.)
c. 1500, "idle talk," from babble (v.). In 16c., commonly in reduplicated form bibble-babble (1530s). Meaning "inarticulate speech" is from 1660s. Other nouns meaning "idle talk" included babblery (1530s), babblement (1640s).
