vipallāsa

reversal change (esp. in a bad sense), inversion, perversion derangement, corruption, distortion
■ The form vipariyāsa occurs at Vin.ii.80 (citta-˚kata, with deranged mind or wrong thoughts); Ja.i.344 (where it is explained by vipallāsa). Otherwise vipallāsa, e.g. Snp.299; Pts.ii.80 Vism.214 (attha˚); Ne.4, Ne.27, Ne.31, Ne.85 sq., Ne.115 sq.; Dhp-a.ii.228; Pv-a.7, Pv-a.70
■ There are 3 kinds of vipallāsas viz. saññā˚; perversion of perception, citta˚; of thought diṭṭhi˚; of views; AN.ii.52; Ne.85; Vism.683. See the same under vipariyesa!

cp. Sk. viparyāsa, vi + pari + as (to throw). The diaeretic P. form (founded on Sk. is vipariyāsa another bastard form is vipariyesa (q.v.)