STRONGS NT 5574: ψεύδομαι

ψεύδομαι; 1 aorist ἐψευσάμην; (deponent middle of ψεύδω (allied with ψιθυρίζω etc. (Vanicek, p. 1195)) 'to deceive', 'cheat'; hence, properly, to show oneself deceitful, to play false); from Homer down; to lie, to speak deliberate falsehoods: Hebrews 6:18; 1 John 1:6; Revelation 3:9; οὐ ψεύδομαι, Romans 9:1; 2 Corinthians 11:31; Galatians 1:20; 1 Timothy 2:7; τινα, to deceive one by a lie, to lie to (Euripides, Aristophanes, Xenophon, Plutarch, others): Acts 5:3; like verbs of saying, with a dative of the person (cf. Winers Grammar, § 31, 5; Buttmann, § 133, 1; Green, p. 100f), Acts 5:4 (Psalm 17:45 (); Psalm 77:36 (); Psalm 88:36 (); Joshua 24:27; (Jeremiah 5:12), etc.); εἰς τινα, Colossians 3:9; κατά τίνος, against one, Matthew 5:11 (L G omit; Tr marginal reading brackets ψευδόμενοι; others connect καθ' ὑμῶν with εἴπωσι and make ψευδόμενοι a simple adjunct of mode (A. V. falsely)); κατά τῆς ἀληθείας, James 3:14 (here Tdf. makes ψεύδεσθε absolutely; cf. Winers Grammar, 470 (438) n. 3). (The Sept. for כִּחִשׁ and כִּזֵּב.)