serene
adjective
[ sɪˈriːn ]
• calm, peaceful, and untroubled; tranquil.
• "her eyes were closed and she looked very serene"
Similar:
calm,
composed,
collected,
cool,
and collected,
as cool as a cucumber,
tranquil,
peaceful,
at peace,
pacific,
untroubled,
relaxed,
at ease,
poised,
self-possessed,
unperturbed,
imperturbable,
undisturbed,
unruffled,
unworried,
unexcitable,
placid,
equable,
even-tempered,
centered,
together,
unflappable,
chilled,
nonplussed,
quiet,
still,
restful,
relaxing,
soothing,
serene
noun
• an expanse of clear sky or calm sea.
• "not a cloud obscured the deep serene"
Origin:
late Middle English (describing the weather or sky as ‘clear, fine, and calm’): from Latin serenus .