необдуманно
From LSJ
καλῶς δρῶν ἐξαμαρτεῖν μᾶλλον ἢ νικᾶν κακῶς → I would prefer to fail with honor than to win by evil | I prefer to fail by acting rightly rather than win by acting wrongly | Better fail by doing right, than win by doing wrong (Sophocles, Philoctetes 95)
Russian > Greek
ἀβούλως, ῥᾳδίως, ῥηϊδίως, προχείρως, εἰκῇ, εἰκῆ, ἀνεπιστάτως, ἀπερισκέπτως, ἀπρονοήτως, ἀπροβούλως, ἀσκέπτως, ἀσκόπως, ἀφροντίστως, ἀνεπιλογίστως, ἐμπλήκτως, ἀκρίτως
