ἀμέθοδος

ον, Adv.
A. not in logical (i.e. syllogistic) form, λόγοι Chrysipp.Stoic. 2.83, cf. Phld. Rh. 1.132S. Adv. ‐ως, περαίνειν Chrysipp.Stoic. 2.87.
2. without plan or system, Longin. 2.2, S.E. P. 2.21; esp. Medic., non-'methodic', αἵρεσις Gal. 10.51. Adv. ‐ως, δημιουργῆσαι Phld. Rh. 1.127S., cf. S.E. M. 8.300, Alex.Aphr. in Metaph. 50.7.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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