Test, prawf, holiad
Tent, pabell: pabellu
Term, ymadrodd; ammod; tymor
Text, testyn, adran
Than, na, nag
That, hwnw, hono, hyny; y neb; y sawl; yr hyn; mai, mal, fel
Thaw, dadmar, meiriol: meirioli
Thee, ti, tydi, di, dydi
Them, hwy, hwynt
Then, y pryd hyny; yna