tap / space
Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Inherited from Middle English spier, spyer, spiar, equivalent to spy + -er. Compare Dutch verspieder and bespieder (“spier”), German Späher (“spier”). Compare also Danish spejde (“spy”), Swedish speja (“spy”).
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tap / space
Classic usage
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