vipallāsa: 'perversions' or 'distortions'. - ''There are 4 perversions which may be either of perception (saññā-vipallāsa), of consciousness (citta v.) or of views (diṭṭhi-v.). And which are these four? To regard what is impermanent (anicca) as permanent; what is painful (dukkha) as pleasant (or happiness-yielding); what is without a self (anattā) as a self; what is impure (ugly: asubha) as pure or beautiful'' (A. IV, 49). - See Manual of Insight, by Ledi Sayadaw (WHEEL 31/32). p.5.
"Of the perversions, the following are eliminated by the 1st path-knowledge (Sotāpatti): the perversions of perception, consciousness and views, that the impermanent is permanent and what is not a self is a self; further, the perversion of views that the painful is pleasant, and the impure is pure. By the 3rd path-knowledge (Anāgāmitā) are eliminated: the perversions of perception and consciousness that the impure is pure. By the 4th path-knowledge (Arahatta) are eliminated the perversions of perception and consciousness that the painful is pleasant" (Vis.M. XXII, 68).
vipallāsa : [m.] derangement; corruption; perversion.
Vipallāsa [cp. Sk. viparyāsa, vi+pari+as (to throw). The diaeretic P. form (founded on Sk. is vipariyāsa; another bastard form is vipariyesa (q. v.)] 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); J i.344 (where it is expld by vipallāsa). Otherwise vipallāsa, e. g. Sn 299; Ps ii.80; Vism 214 (attha˚); Nett 4, 27, 31, 85 sq., 115 sq.; DhA ii.228; PvA 7, 70. -- There are 3 kinds of vipallāsas, viz. saññā˚ perversion of perception, citta˚ of thought, diṭṭhi˚ of views; A ii.52; Nett 85; Vism 683. See the same under vipariyesa!