ψεῦδος, -εος (-ους), τό

[in LXX chiefly for שֶׁקֶר, also for כַּחַשׁ, כָּזָב ;]

a falsehood, untruth, lie: Rev.14:15; opposite to ἡ ἀλήθεια, Jhn.8:44, Rom.1:25, Eph.4:25, 2Th.2:11, 1Jn.2:21; to τὸ ἀληθές, 1Jn.2:27; ποιεῖν ψ. Rev.21:27 22:15; ἐν πάσῃ δυνάμει κ. σημείοις κ. τέρασιν ψεύδους (genitive qual. see M, Th. 104; and on the meaning and construction, see also ICC, in l), 2Th.2:9.†

(AS)

a falsehood, untruth, lie