προσδέομαιprosdéomai, pros-deh'-om-ahee; from G4314 and G1189; to require additionally, i.e. want further:—need.
Thayer's Greek Lexicon
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STRONGS G4326:
προσδέομαι; deponent passive, to want besides, need in addition, (cf. πρός, IV. 2): προσδεόμενόςτίνος, quom nullius boni desideret accessionem (Erasmus) (A. V.as though he needed anything), Acts 17:25. (Xenophon, Plato, and following; the Sept.; (in the sense to ask of, several times in Herodotus).)