Where does “sérieusement” come from?
sérieusement (French) comes from French sérieux, from Latin sēriōsus, from Latin sērius, from Latin sērus, from Proto-Italic swerjos, from Proto-Indo-European swer-yo-s, from Proto-Indo-European swer- — to ache; to fester; wound; injury.
sérieusement (French): seriously
Ancestry of “sérieusement”, step by step