Proto-Indo-European *meh₂ḱ-

→ English macron (root)

→ English en masse (root)

→ English en masse (derived)

→ English meager (root)

→ English macro- (root)

→ English maigre (root)

→ English mactate (root)

→ Welsh magu (derived)

→ Scottish Gaelic mac (derived)

→ Ancient Greek μακρός (mention)

→ Ancient Greek Μακεδών (root)

→ Ancient Greek Μακεδών (derived)

→ Ancient Greek μῆκος (inherited)

→ Manx mac (derived)

→ Latin macer (mention)

→ Latin mactus (mention)

→ Middle Irish mac (derived)

→ Primitive Irish ᚋᚐᚊᚔ (inherited)

→ Old Irish macc (inherited)

→ Old Irish doformaig (derived)