Irish trom

← Proto-Celtic *trummos (inherited)

← Welsh trwm (cognate)

← Irish éadrom (link)

← Old Irish trom (inherited)

← Old Irish trom (inherited)

→ Irish cothrom (affix)

→ Irish leatrom (affix)

→ Irish éadrom (affix)

→ Irish ceanntrom (affix)

→ Irish tromaosta (affix)

→ Irish antrom (affix)

→ Irish tromas (affix)

→ Irish troime (affix)

→ Irish troimide (mention)

→ Irish tromluí (affix)