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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Compound adjective of low + down in the sense of "humble" recorded in the 1540s, in the sense of "vulgar, far down the social scale" in 1888. Recorded as a noun in 1915 in the slang sense of secret or inside information.
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tap / space
Classic usage
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