Quick Definition
rapacious, ravenous, a robber, an extortioner
Strong's Definition
rapacious
Derivation: from G726 (ἁρπάζω);
KJV Usage: extortion, ravening
Thayer's Greek Lexicon
ἅρπαξ, ἁρπαγος, ὁ, adjective, rapacious, ravenous: Mat_7:15; Luk_18:11; as a substantive, a robber, an extortioner: 1Co_5:10; 1Co_6:10. (In both uses from (Aristophanes), Xenophon down.)
Mounce Concise Greek Dictionary
ἅρπαξ harpax 5x
pr. raveneous, ravening, as a wild beast, Mat_7:15 ;
met. rapacious, given to extortion and robbery, an extortioner, Luk_18:11 ; 1Co_5:10-11 ; 1Co_6:10
Abbott-Smith Greek Lexicon
ἅρπαξ , -αγος , ὁ , ἡ
( < ἁρπάζω ),
[in LXX : Gen_49:27 ( H2963 ) * ;]
rapacious: Mat_7:15 , Luk_18:11 ; as subst ., a swindler, an extortioner ( MM , s.v. ), 1Co_5:10-11 ; 1Co_6:10 .†
Moulton & Milligan — Vocabulary of the Greek NT
ἅρπαξ [page 79]
Deissmann ( LAE p. 321 n .1 ) notes that ἅ was current as a loan-word in Latin comedy : in Paul it should probably not be translated robber but rendered by some other word like swindler ( extortioner, AV, RV).
Liddell-Scott — Intermediate Greek Lexicon
ἅρπαξ [Etym: ἁρπάζω] "rapacious", Lat. rapax, Ar. , Xen. as Subst., ἅρπαξ, "rapine", Hes. ἅρπαξ, "a robber, plunderer", Ar.
STEPBible — Tyndale Abridged Greek Lexicon
ἅρπαξ, -αγος, ὁ, ἡ
(ἁρπάζω), [in LXX: Gen.49:27 (טָרַף) * ;]
rapacious: Mat.7:15, Luk.18:11; as subst., a swindler, an extortioner (MM, see word), 1Co.5:10-11 6:10.†
(AS)