Extended Strong's Greek Lexicon (Abbott-Smith based)
be impossible
Usage: ἀδυνατέω, -ῶ (ἀδύνατος), [in LXX: Deu.17:8, Zec.8:6 (פּלא ni.), Job.42:2 (בּצר ni.), al. ;] __1. Abbott-Smith omits this number to be unable (cl., Philo; π., see MM, VGT, see word). __2. In LXX and NT (Kennedy, Sources, 124; Hatch, Essays, 4; Field, Notes, 46 f.), to be impossible: Mat.17:20, Luk.1:37. † (AS)