potent Look up potent at Dictionary.com
c.1500, from L. potentem (nom. potens) "powerful," prp. of *potere "be powerful," from potis "powerful, able, capable" (cognate with Skt. patih "master, husband," Gk. posis, Lith. patis "husband"). Meaning "having sexual power" is first recorded 1899. Potency is attested from 1539, from L. potentia "power," from potentem "potent."