अयथातथाayathātathāind. given by Pat. on Pa1n2. 7-3, 31 as the base of आयथातथ्य (whereas Pa1n2. derives it from अ-यथा-तथम् q.v.)
indeclinable given by Pat. on Pa1n2. 7-3, 31 as the base of आयथातथ्य (whereas Pa1n2. derives it from अ-यथा-तथम् quod vide)