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congenital (adj.)

"existing from birth," 1796, from Latin congenitus "born or produced together," from assimilated form of com "together, with" (see con-) + genitus, past participle of gignere "to beget" (from PIE root *gene- "give birth, beget"). This sense formerly belonged to congenial (which is attested from 1660s with this meaning). Related: Congenitally.