Latin ergo

← Proto-Indo-European *h₃reǵ- (derived)

← Latin *ēregō (mention)

← Latin ex- (affix)

← Latin regō (affix)

← Latin pergō (mention)

← Latin ergā (mention)

← Latin [[ē]] [[regiōne]] (mention)

→ English ergo (derived)

→ English ergotism (cognate)

→ Middle English ergo (borrowed)