Quick Definition
ψευδόμαρτυς, υρος, ὁ n.m. a false witness
Strong's Definition
from 5571 and a kindred form of 3144; a spurious witness, i.e. bearer of untrue testimony
KJV Usage: false witness
UBS Dictionary of the Greek New Testament
noun, m. | -υρος | ψευδομαρτυρέω
33.273 · Communication · Witness, Testify
false witness (derivative of ψευδομαρτυρέω ‘to testify falsely,’ 33.271) one who testifies falsely The focal element in the evidence provided by a ‘false witness’ is the fact that what is said is not true.
It is also possible that such a person has pretended to have been present and thus an eyewitness of an event, but that is not the focus of the meaning. In fact, a false witness may have been present but at the same time may later provide false evidence as to what took place. It is possible to render ψευδόμαρτυς in some languages as ‘one who pretends to know about something but is really lying in what he says’ or ‘one who lies about what he pretends to have seen.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Mounce Concise Greek Dictionary
ψευδόμαρτυς pseudomartys 2x
a false witness, Mt. 26:60 (2x); 1 Cor. 15:15*
Abbott-Smith Greek Lexicon
**† ψευδο-μάρτυς, -υρος, ὁ
[in LXX: Da LXX Su 60, TH ib. 61 Bl * ;]
a false witness: Mt 26:60; c. gen. obj. (v. WM, § 30, 1a), I Co 15:15.†
Liddell-Scott-Jones — Greek-English Lexicon
ψευδομάρτυρ (pseudomartur) — false witness. ψευδομάρτυς, ῠρος, ὁ, false witness, plural in [Refs 5th c.BC+] false witnesses about God, [NT]; as adjective, τὰν δίκαν τὰν ψευδομάρτυρα the action for false witness, [Refs].with l. 8; ψ. τιμαί honours attesting no real merit, [Refs 1st c.AD+]