Dictionary entry

ἑταῖρος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἑταῖρος, -ου, ὁ

[in LXX chiefly for רֵעַ and cognate forms, also Si 11:6 37:2^ff., al.;]

a companion, comrade: Mt 11:16 (WH, ἑτέροις); voc., as term of address, my friend: Mt 20:13 22:12 26:50.†