Welsh ti

← Proto-Brythonic *ti (inherited)

← Proto-Celtic *tū (inherited)

← Welsh di (link)

← Welsh ’th (link)

← Welsh chdi (link)

← Welsh rwyt (mention)

← Welsh di (mention)

← Welsh dy (mention)

← English tee (borrowed)

← Proto-Indo-European *túh₂ (inherited)

→ English thou (cognate)

→ Breton te (cognate)

→ Welsh i (link)

→ Welsh dy (mention)

→ Welsh di (link)

→ Old Irish tú (cognate)