se·rene
| \ sə-ˈrēn
\
1a
: clear and free of storms or unpleasant change
serene skies
b
: shining bright and steady
the moon, serene in glory— Alexander Pope
2
: august
—used as part of a title His Serene Highness
3
: marked by or suggestive of utter calm and unruffled repose or quietude
a serene smile
1
archaic
: a serene condition or expanse (as of sky, sea, or light)