G2139 εὐπερίστατος (euperístatos)

KJV renderings: which doth so easily beset
Strong's definition: well standing around, i.e. (a competitor) thwarting (a racer) in every direction (figuratively, of sin in genitive case)
Derivation: from G2095 (εὖ) and a derivative of a presumed compound of G4012 (περί) and G2476 (ἵστημι);

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