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potent

/ˈpəʊt(ə)nt/ adjective

In Latin: potens Wiktionary

Origin

From Middle English potent, borrowed from Latin potens, potentis (“powerful, strong, potent”), present participle of posse (“to be able”), from potis (“able, powerful, originally a lord, master”).

From Wiktionary, via Kaikki.org (CC BY-SA)