quietus
Concise Oxford English Dictionary © 2008 Oxford University Press:
quietus /kwʌɪˈiːtəs/
▶noun (pl. quietuses)
- 1 literary death or a cause of death, regarded as a release from life.
- 2 archaic something calming or soothing.
– origin ME: abbrev. of med. L. quietus est (see quit), orig. used as a form of receipt on payment of a debt.
'quietus' also found in these Oxford entries:

