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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From the phrase skin a flint (“go to extreme lengths for the sake of gain or economy”), from the brittleness and hardness of flint which makes it almost impossible to remove just its skin without shattering it.
niggard, scrooge, churl
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tap / space
Classic usage
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