c.1300, from O.Fr. quiete,
from L. quies
) "rest, quiet," from PIE base *qwi-
"rest" (cf. Goth. hveila,
"space of time;" see while
). The adj. is attested from 1382; the verb is first attested 1440. Quietism
is attested from 1687, on model of mysticism,
originally in ref. to the mysticism of Molinas (1640-97), Sp. priest in Rome, whose "Guida spirituale"
was published 1675 and condemned by the Inquisition in 1685. Quietude
is from 1597.