From a (as a negative particle) and dunatos; unable, i.e. Weak (literally or figuratively); passively, impossible -- could not do, impossible, impotent, not possible, weak.
see GREEK a
see GREEK dunatos
ἀδύνατα (adunata) − 1 Occurrence
ἀδύνατόν (adunaton) − 7 Occurrences
ἀδύνατος (adunatos) − 1 Occurrence
ἀδυνάτων (adunatōn) − 1 Occurrence