ἀναντίθετος
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ον,
A not to be contradicted, Olymp.in Phlb.p.247 S.; αἵρεσις Simp. in Epict.p.7 D., al. II without contrary or opposite, Dam.Pr.26, Anon.in Cat.23.21.