1) working, efficiency
1a) in the NT used only of superhuman power, whether of God or of the Devil
Part of Speech: noun feminine
Citing in TDNT: 2:652, 251
From G1756; efficiency ("energy"): - operation, strong, (effectual) working.
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 ἐνέργεια; click on the second column to search for that grammatical form of the root ἐνέργεια; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐνέργεια.