1) skilfully surrounding, i.e. besetting
Part of Speech: adjective
From G2095 and a derivative of a presumed compound of G4012 and G2476; well standing around, that is, (a competitor) thwarting (a racer) in every direction (figuratively of sin in general): - which doth so easily beset.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root εὐπερίστατος; click on the second column to search for that grammatical form of the root εὐπερίστατος; click on the third column to search for that word and grammatical form; click on the total to search for the root εὐπερίστατος.