ον, (< ῥᾶ, θυμός) light-hearted, easy-tempered, frivolous, careless, ὦ ῥαθυμότατε Pl. Tht. 166a. mostly in bad sense, taking things easy, indifferent, S. El. 958, Isoc. 9.35; οὐδεὶς γὰρ ὢν ῥ. εὐκλεὴς ἀνήρ E. Fr. 237.
slipshod, of literary style, Cic. QF 2.15 (16).5 (Comp.). of things, care-free, easy, βίος Isoc. 4.108; ῥαθυμοτάτη καταφυγή Id. 11.45; τὰ ῥαθυμότατα αἱρεῖσθαι Pl. Cri. 45d, cf. Arist. Rh. 1368b18. Adv. -μως carelessly, Pl. Lg. 659b, etc. much like ῥᾳδίως, lightly, with equanimity, ῥ. φέρειν And. 4.23, Pl. R. 549d; ὑποφέρειν Id. Lg. 879c; ῥ. ἔχειν Isoc. 12.17; περί τι Plb. 4.7.6; Comp. -ότερον Isoc. 6.56, 7.10; ῥαθυμοτέρως διάγειν Arist. Pol. 1335b17; διακείμενοι Aen.Tact. 26.2. [ῥαθυμότερος correctly in PSI 5.522.4 (iii BC), but ῥαιθυμότατε wrongly in cod. B of Pl. Tht. l.c. (fol. 93v).]