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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From the former trademark Escalator, created by American inventor Charles Seeberger in 1900, from Latin ē- (“from, out of”) + scala (“ladder”) + -tor, which forms nouns of agency; see the appendix. Broader usage may be influenced by its derivative escalate, by surface analysis, escalate + -or. For an alternative etymology, see the Online Etymology Dictionary.
escalator clause
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tap / space
Classic usage
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