visuddhi
viśuddhi — purification; SB 2.9.4
viśuddhi — isolation; SB 2.10.2
viśuddhi-artham — for purifying; SB 3.6.34
karma-viśuddhi — of purification of fruitive activities; SB 5.22.3
ātma-viśuddhi-artham — for self-purification; SB 6.19.19-20
viśuddhi-artham — for the purpose of perfect knowledge; CC Adi 2.91-92