Quick Definition
slanderous
Strong's Definition
scurrilious, i.e. calumnious (against men), or (specially) impious (against God)
Derivation: from a derivative of G984 (βλάπτω) and G5345 (φήμη);
KJV Usage: blasphemer(-mous), railing
Thayer's Greek Lexicon
βλάσφημος, βλάσφημον (βλάξ sluggish, stupid, and φήμη speech, report (others, βλάπτω (which see) and φήμη)), speaking evil, slanderous, reproachful, railing, abusive: Act_6:11 (ῤήματα βλάσφημα εἰς Μωυσῆν καί τόν Θεόν); (Act_6:13 Rec. (ῤήματα βλάσφημα κατά τοῦ τόπου τοῦ ἁγίου)); 2Pe_2:11 (see βλασφημία, a.); Rev_13:5 (Lachmann); βλάσφημος as a substantive, a blasphemer: 1Ti_1:13; 2Ti_3:2. (Isa_66:3; Wis_1:6; Sir_3:16; 2Ma_9:28; ( (cf. 4)); in Greek writings from Demosthenes down.)
Mounce Concise Greek Dictionary
βλάσφημος blasphēmos 4x
slanderous, railing, reproachful, 2Ti_3:2 ; 2Pe_2:11 ;
blasphemous, Act_6:11 ; Act_6:13 ; 1Ti_1:13
Abbott-Smith Greek Lexicon
βλάσφημος , -ον
( < βλασ , of uncertain deri v. , v. Thayer , Boisacq ; + φήμη , speech),
[in LXX : Isa_66:3 ( H205 H1288 ), Wis_1:6 , Sir_3:16 , 2Ma_9:28 ; 2Ma_10:4 ; 2Ma_10:16 * ;]
(a) evil-speaking, slanderous, blasphemous: Act_6:11 , 2Ti_3:2 , 2Pe_2:11 ( cf. Jud_1:9 );
(b) as subst . a blasphemer: 1Ti_1:13 ( Cremer , 570).†
Moulton & Milligan — Vocabulary of the Greek NT
βλάσφημος [page 112]
The more special sense of irreverence towards God which β . and its derivatives have acquired, though not inherent in the word itself (cf. Jas_2:7 , 2Pe_2:11 ), may be illustrated from Vettius Valens p. 44 .4 εἰς θεοὺς βλασφημοῦσιν ἢ ἐπίορκοι καὶ ἄθεοι καθίστανται , 58 .12 εἰς τὰ θεῖα βλασφημοῦντες , 67 .20 πολλὰ βλασφημήσει θεούς (for construction cf. 4 Kings 19 .6 , 22 ). Thumb ( Hellen. p. 178) remarks on the word as a genuine piece of Biblical Greek, that is a word which has acquired a technical meaning in association with Jewish and Christian religion. The etymology which seems to suit best its original meaning of injurious speaking βλάψ , the reduced form of βλάβος , and φη -μί is not without phonetic difficulties : see Brugmann-Thumb Gr. .4 p. 117f. (where it is accepted with some hesitation), and for an alternative (Brugmann s) Boisacq Lex. s.v.
Liddell-Scott — Intermediate Greek Lexicon
βλάσφημος [Etym: The origin of βλας is uncertain: βλάξ and βλάπτω have both been suggested.] "evil-speaking": of words, "slanderous", Dem. "speaking blasphemy, blasphemous", and as Subst. "a blasphemer", NTest.
STEPBible — Tyndale Abridged Greek Lexicon
βλάσφημος, -ον
(βλασ-, of uncertain deriv., see Thayer, Boisacq; + φήμη, speech), [in LXX: Isa.66:3 (מְבָרֵךְ אָוֶן), Wis.1:6, Sir.3:16, 2Ma.9:28 10:4, 36 * ;]
__(a) evil-speaking, slanderous, blasphemous: Act.6:11, 2Ti.3:2, 2Pe.2:11 (cf. Ju 9);
__(b) as subst. a blasphemer: 1Ti.1:13 (Cremer, 570).
† (AS)