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)
securely, firmly: P. and V. βεβαίως, ἀσφαλῶς.
obstinately: Ar. and P. ἀυθάδως, P. σκληρῶς.