Meaningless or incomprehensible speech or writing; words that don't make sense.
Possibly from 'Gibereach' or derived from Arabic 'jabbar' meaning 'mighty,' but more likely from 'gibber' (to speak rapidly and unintelligibly) + '-ish' suffix, first recorded in the 1500s.
When babies babble 'gaga' and 'dada,' they're literally speaking gibberish, but their brains are learning language patterns—what sounds like meaningless noise is actually crucial practice for real communication.
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