English erratic

← Old French erratique (cognate)

← Proto-Indo-European *h₁ers- (root)

← Latin erraticus (borrowed)

→ English erratically (suffix)

→ English nonerratic (prefix)

→ English inerratic (prefix)

→ English erraticness (suffix)

→ English erraticism (suffix)

→ English erraticity (suffix)

→ English unerratic (prefix)