Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *d(w)is- Proto-Italic *dis- Latin dis- Old French des-bor. ▲ Latin dis-bor. Middle English dis- English dis- Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin nectō Latin cōnectō Latin connectō English connect English disconnect From dis- + connect.