Latin monstrum

← Proto-Indo-European *men- (root)

← Proto-Italic *monestrom (inherited)

← Latin moneō (suffix)

← Latin -trum (suffix)

→ English hippopotomonstrosesquipedalian (mention)

→ German Monster (borrowed)

→ Middle English monstre (derived)

→ Spanish monstruo (borrowed)

→ Galician monstro (borrowed)

→ Italian mostro (inherited)

→ Portuguese monstro (borrowed)

→ Romanian monstru (borrowed)

→ Swedish monster (derived)