Abbott-Smith Manual Greek Lexicon
ἅρπαξ (G727)
5 ἅρπαξ , -αγος, ὁ, ἡ ( ἁρπάζω ), [in LXX: Ge 49:27 ( טרף )*;] rapacious : Mt 7:15 , Lk 18:11 ; as subst., a swindler , an extortioner (MM, s.v.), I Co 5:10 , 11 6:10 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain