A — 1: ψευδής
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(Strong's #5571 — Adjective — pseudes — psyoo-dace' )

is used of "false witnesses," Acts 6:13; "false apostles," Revelation 2:2 , RV, "false," AV, "liars;" Revelation 21:8 , "liars."

APOSTLEBRETHRENCHRISTPROPHETWITNESS.
A — 2: ψευδώνυμος
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(Strong's #5581 — Adjective — pseudonumos — psyoo-do'-noo-mos )

"under a false name" (No. 1, and onoma, "a name;" Eng., "pseudonym"), is said of the knowledge professed by the propagandists of various heretical cults, 1—Timothy 6:20 .

B — 1: ψεῦδος
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(Strong's #5579 — Noun Neuter — pseudos — psyoo'-dos )

"a falsehood" (akin to A, No. 1), is so translated in Ephesians 4:25 , RV (AV, "lying"); in 2—Thessalonians 2:9 , "lying wonders" is lit. "wonders of falsehood," i.e., wonders calculated to deceive; it is elsewhere rendered "lie," John 8:44; Romans 1:25; 2—Thessalonians 2:11; 1—John 2:21,27; Revelation 14:5 , RV; 21:27; 22:15. See GUILE , LIE.

C — 1: ψεύδομαι
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(Strong's #5574 — Verb — pseudo — psyoo'-dom-ahee )

"to deceive by lies," is used in the Middle Voice, translated "to say ... falsely," in Matthew 5:11; it is elsewhere rendered "to lie," Acts 5:3,4; Romans 9:1; 2—Corinthians 11:31; Galatians 1:20; Colossians 3:9; 1—Timothy 2:7 . See LIE.