Quick Definition
a false brother
Strong's Definition
a spurious brother, i.e. pretended associate
Derivation: from G5571 (ψευδής) and G80 (ἀδελφός);
KJV Usage: false brethren
Thayer's Greek Lexicon
ψευδάδελφος, ψευδαδελφου, ὁ (ψευδής and ἀδελφός), a false brother, i. e. one who ostentatiously professes to be a Christian, but is destitute of Christian knowledge and piety: 2Co_11:26; Gal_2:4.
Mounce Concise Greek Dictionary
ψευδάδελφος pseudadelphos 2x
a false brother, a pretend Christian, 2Co_11:26 ; Gal_2:4
Abbott-Smith Greek Lexicon
*† ψευδ -άδελφος , -ου , ὁ ,
a false brother: of professing Christians, 2Co_11:26 , Gal_2:4 .†
Liddell-Scott — Intermediate Greek Lexicon
ψευδάδελφος ψευδ-άδελφος, ὁ, "a false brother", NTest.
STEPBible — Tyndale Abridged Greek Lexicon
ψευδ-άδελφος, -ου, ὁ
a false brother: of professing Christians, 2Co.11:26, Gal.2:4.†
(AS)