unchanging
Nibbikāra (adjective) [nis + vikāra] steady, unchanged, steadfast; persevering Ja I 66; Pv-a 178, 253 (+ nicca); Pj II 189, 497; Vism 311.
【形】 不變更的，堅定的。
(adj, adj, from vikāra) unchanged; unaltered; unaffected; indifferent unchanging, steadfast [lit.] without change Construction: nir + vi + √kar > kār + *a