serio
sermo
se·ri·us
grave
serious
solemn
Synonyms for serius
gravis
–
burdensome, grievous, heavy, important, serious, severe, unwholesome, weighty
sepulchrum
–
grave, sepulcher, tomb
tumulus
–
grave, heap of earth, mound
Similar to serius
secretarius
–
privy counsellor
series
–
sequence
serio
–
seriously
sepius
–
frequently, often, repeatedly
varius
–
changeable, changing, varied, various
sarius
–
opponent, opposite
cellarius
–
cellarer, relating to a store