Foolish, meaningless, or excessively sentimental talk or writing; or to talk foolishly or let saliva drip from your mouth.
From Middle English 'drevel,' possibly related to 'drip' or 'drool,' originally meant dripping or dribbling, then extended to meaningless speech that flows pointlessly like liquid.
Drivel is perfectly onomatopoetic—it sounds like dripping, which is exactly what it means when someone talks and it goes nowhere, just dribbling out mouth nonsense into the air!
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