Latin stupidus

← Proto-Indo-European *(s)tewp- (root)

← Latin stupeō (suffix)

← Latin idus (suffix)

→ English stupid (derived)

→ Catalan estúpid (derived)

→ Catalan estabornir (mention)

→ Danish stupid (derived)

→ Spanish estúpido (derived)

→ French stupide (borrowed)

→ Italian stupido (mention)

→ Maltese stupidu (derived)

→ Portuguese estúpido (mention)

→ Romanian stupid (derived)