A type of Kriyā (urge);
a sub-type of Mithyadarśanapratyayā Kriyā (the propensity qua perverted faith), in which the Tattva (category of truth) is accepted in a slightly excessive or deteriorated form; e.g., to believe the soul which has the dimension equivalent to the body to have the dimension equivalent to the size of the thumb or to that of the whole universe.
ūnaṃ svapramānāddhīnamatiriktaṃ- tato'- dhikamātmādi vastu tadviṣayaṃ mithyādarśanamūnātiriktamithyādarśanaṃ tadeva pratya-yo yasyāḥ sā Ūnātiriktamithyādarśanapratyayā-yā.
(Sthā 2.19 Vṛ Pa 39)