s 1 e 1 r 1 e 1 n 1 e 1
6 letters · 6 points in Scrabble
Meaning
adjective not agitated; without losing self-possession
adjective completely clear and fine
originBorrowed from Middle French serein, from Old French serein (“evening”), from Vulgar Latin *serānum, from substantive use of sērum, neuter of sērus (“late”) + -ānus suffix.
Etymology from Wiktionary, CC BY-SA 3.0