G3132 μαντεύομαι (manteúomai)

KJV renderings: by soothsaying
Strong's definition: to divine, i.e. utter spells (under pretense of foretelling
Derivation: from a derivative of G3105 (μαίνομαι) (meaning a prophet, as supposed to rave through inspiration);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.