Quick Definition
βλάσφημος, ον Adj slanderous
Strong's Definition
from a derivative of 984 and 5345; scurrilious, i.e. calumnious (against men), or (specially) impious (against God)
KJV Usage: blasphemer(-mous), railing
UBS Dictionary of the Greek New Testament
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
βλάσφημος, -ov, (βλάξ slugaish, stupid, and φήμη speech, report, [ἃ]. βλάπτω (q. v.) and φ.7), speaking evil, slanderous, reproachful, railing, abusive: Acts vi. 11 (ῥήματα βλάσφημα eis Μωῦσῆν καὶ τὸν θεόν) ; [vi. 13 Ree. (p. BX. κατὰ τοῦ τόπου τοῦ ἁγίου); 2 Pet. ii. 11 (see βλασφημία, a.); Rev. xiii. 5 [Lehm.]; βλάσφημος as subst. a blasphemer: 1 Tim. i. 13; 2 Tim. iii. 2. (Is. xvi. 3; Sap. i. 6; Sir. iii. 16; 2 Mace. ix. 28; [x. 36 (cf. 4)]; in Grk. writ. fr. Dem. down.)
Mounce Concise Greek Dictionary
βλάσφημος blasphēmos 4x
slanderous, railing, reproachful, 2 Tim. 3:2; 2 Pet. 2:11; blasphemous, Acts 6:11, 13; 1 Tim. 1:13
Abbott-Smith Greek Lexicon
βλάσφημος, -ον
(< βλασ-, of uncertain deriv., v. Thayer, Boisacq; + φήμη, speech), [in LXX: Is 66:3 (מְבָרֵךְ אָוֶן), Wi 1:6, Si 3:16, II Mac 9:28 10:4, 36 * ;]
evil-speaking, slanderous, blasphemous: Ac 6:11, II Ti 3:2, II Pe 2:11 (cf. Ju 9);
as subst. a blasphemer: I Ti 1:13 (Cremer, 570).†
Moulton & Milligan — Vocabulary of the Greek NT
βλάσφημος. The more special sense of irreverence towards God which β. and its derivatives have acquired, though not inherent in the word itself (cf. Jas 27, 2 Pet 211), may be illustrated from Vettius Valens p. 44% els θεοὺς βλασφημοῦσιν ἢ ἐπίορκοι καὶ ἄθεοι καθίστανται, 58! εἰς τὰ θεῖα βλασφημοῦντες, 6γ50 πολλὰ βλασφημήσει θεούς (for construction cf. 4 Kings 19%)**). Thumb (fed/en. 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---ἰς not without phonetic diffculties: see Brugmann-Thumb G7.‘ p. 117f. (where it is accepted with some hesitation), and for an alternative (Brugmann’s) Boisacq Lex. sv.
Liddell-Scott-Jones — Greek-English Lexicon
βλάσφημος (blasphēmos) — blasphemous. βλάσφημ-ος, ον, speaking ill-omened words, evil-speaking, [Refs 4th c.BC+]: with genitive, against.., [Refs 1st c.AD+]
2. of words, slanderous, libellous, δέδοικα μὴ βλάσφημον μὲν εἰπεῖν ἀληθὲς δ᾽ ᾖ [Refs 4th c.BC+]. adverb -μως[Refs 2nd c.AD+]
3. blasphemous, ἔθνη [LXX+NT]: substantive, blasphemer, [LXX+NT]