LSJ
Adv. pf. part. Pass., (< παρορμάω) violently, Hsch. and Phot. s.v. περιόργως.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
adv. part. perf. pass. von παρορμάω, heftig, hitzig, eifrig, VLL Erkl. von περιόργως.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)