ἱλᾰρός · hilaros — LSJ
cheerful, merry, φέγγος Ar. Ra. 456 (lyr.); ἱλαροὶ ἀντὶ σκυθρωπῶν X. Mem. 2.7.12; ἱλαρὸς ἴσθι Thphr. Char. 17.9, ἱλαρὸν βλέψαι AP 12.159 (Mel.), cf. Phld. Mus. p.85 K., Philostr. Im. 1.16; ἱ. δότης 2 Ep.Cor. 9.7, cf. LXX Pr. 22.8: in later Greek, = ἵλεως, gracious, PMag.Leid.W. 14.12, etc.: τὸ ἱ.,= ἱλαρότης, Plu. Sull. 34, Heraclid.Pont. ap. Ath. 14.624d; -ωτέρα ἀγγελία more cheerful news, Jahresh. 23 Beibl. 283 (Ephesus). Adv. -ρῶς X. Ap. 33, LXX Jb. 22.26, Phld. Mus. l.c., Plu. Ages. 2.
of blood, quick-pulsing, Philostr. Gym. 48 (Comp.).
of imitation gold, bright, PLeid.X. 17 (iii/ iv A.D.). Adv. ἱλαρῶς (leg. ἱλαρῷ) ib. 87.