εὐμαρότης
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
ητος, ἡ,
A = εὐμάρεια, Callistr.Stat.3.
German (Pape)
[Seite 1079] ητος, ἡ, = εὐμάρεια, Callistr. p. 894, 11.