ἀπαρασκεύως
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)
Spanish
con falta de preparación, improvisadamente, con falta de medios, con falta de previsión
Russian (Dvoretsky)
ἀπαρασκεύως: Polyb. = ἀπαρασκευάστως (без подготовки).