'equanimity', also called tatra-majjhattatā
(q.v.), is an ethical quality belonging to the sankhāra-group (s.
khandha) and should therefore not be confounded with indifferent feeling (adukkha-m-asukhā
vedanā) which sometimes also is called upekkhā (s. vedanā).
upekkhā is one of the 4 sublime abodes (brahma-vihāra,
q.v.), and of the factors of enlightenment (bojjhanga, q.v.). See
Vis.M. IV, 156ff.