G1388 δόλος (dólos)

KJV renderings: craft, deceit, guile, subtilty
Strong's definition: compare G1185 (δελεάζω)); a trick (bait), i.e. (figuratively) wile
Derivation: from an obsolete primary verb, (probably meaning to decoy;

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