ἀγαπητός, -ή, -όν (< ἀγαπάω), [in LXX chiefly for יָתִידH3039, יָדִידH3039;] beloved (v. M, Pr.(a) by God: of Christ, Mt 3:17; of men, Ro 1:7; (b) by Christians, of one another: I Co 4:14; freq. as form of address, I Co 10:14; opp. to ἐχθρός, Ro 11:28 (v. AR, Eph., 229; Cremer, 17; MM, VGT, s.v.).
Henry George Liddell, Robert Scott, A Greek-English Lexicon, ἀγαπητός
katabiblon.com Wiki Lexicon of the Greek New Testament and Concordance, ἀγαπητός