English serious

← Old English swǣr (cognate)

← German schwer (cognate)

← English sweer (link)

← Middle English seryows (inherited)

← Old French serieux (derived)

← Proto-Indo-European *swer- (derived)

← Latin sērius (derived)

→ English seriously (suffix)

→ English seriousness (suffix)

→ English ultraserious (prefix)

→ English jocoserious (blend)

→ English unserious (prefix)

→ English semiserious (affix)

→ English nonserious (prefix)

→ English superserious (prefix)

→ English overserious (prefix)

→ English hyperserious (affix)

→ English self-serious (prefix)

→ English seriositude (suffix)

→ English /srs (mention)

→ Japanese 真剣 (mention)

→ Norwegian Bokmål graverende (link)

→ Thai ซีเรียส (borrowed)