LSJ
Pass., (< μῶρος) become dull or sluggish, ἐμωρώθη ἡ καρδίη was stupefied, Hp. Virg. 1; [αἶγες] ἑστᾶσιν ὥσπερ μεμωρωμέναι as if stupefied, v.l. in Arist. HA 610b30 (cf. μωραίνω) μεμωρωμένα imbecility, Hp. Prorrh. 1.92; μεμωρῶσθαι περί τι prob. l. in Corn. ND 25.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)