composed
at rest
calm
cloistered
cool
dwindling
ebbing
even-tenored
halcyon
hushed
impassive
isolated
moldering
pacific
peaceable
peaceful
placid
quiescent
quiet
reposeful
reposing
restful
resting
secluded
sequestered
sequestrated
sheltered
smooth
still
still as death
stillish
stilly
stoic
stolid
subsiding
tranquil
unagitated
unbothered
undisturbed
unexcited
unflustered
unimpassioned
unmoved
unplagued
unruffled
unstirred
unstirring
untormented
untroubled
unvexed
emotionless
noncommittal
oblivious
self-assured
self-possessed
unafraid
unchanged
unconcerned
unconvinced
undismayed
uneventful
unflappable
unhurried
unimpressed
uninformative
unlined
unobservant
unreadable
unsurprised
unworried
curbed
disturbed
perturbed