prevalent (adj.)

early 15c., "having great power or force," from Latin praevalentem (nominative praevalens) "of superior strength; mighty," present participle of praevalere "to be more able," from prae "before" (see pre-) + valere "have power, be strong" (from PIE root *wal- "to be strong"). Meaning "extensively existing, in general use" is from 1650s.

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