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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
The obsolete “unconstrained” sense is borrowed from French libre (“at liberty”; “free” as in “clear”, “vacant”, “without obligation”), from Latin līber (“free, unrestricted”), ultimately from Proto-Indo-European *h₁lewdʰ- (“people”), whence obsolete English lede (“person(s)”), English leud, and German Leute. The software and the unenslaved senses are either borrowed from the above French, or from its Spanish cognate libre, of the same meaning and Latin etymon.
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Classic usage
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