Welsh tir

← Proto-Brythonic *tir (inherited)

← Proto-Celtic *tīros (inherited)

← Proto-Indo-European *ters- (root)

← Proto-Indo-European *ters- (inherited)

← Old Welsh tir (inherited)

→ Welsh abatir (compound)

→ Welsh milltir (mention)

→ Welsh rhandir (compound)

→ Welsh tiroedd (suffix)

→ Welsh cyfandir (compound)

→ Welsh llwyfandir (compound)

→ Welsh Swistir (compound)

→ Welsh Swistir (mention)

→ Welsh culdir (compound)

→ Welsh ucheldir (compound)

→ Welsh arfordir (affix)