They, hwy, hwynt-hwy

Thin, teneu, main

This, hwn, hon, hyn

Thou, ti, tydi

Thus, fel hyn

Tide, llanw: ffrydlifo

Tile, peithynen

Till, cloergell; hyd, hyd oni: llafurio

Told, dywededig

Toll, toll, treth: tolli