desist
Concise Oxford English Dictionary © 2008 Oxford University Press:
desist /dɪˈsɪst, dɪˈzɪst/
▶verb (often desist from) stop doing something.
– origin ME: from OFr. desister, from L. desistere, from de- ‘down from’ + sistere ‘to stop’.
'desist' also found in these Oxford entries:

