Mis-er-a-ble, gresynol; crintach
Mis-sion-a-ry, cenadwr; cenadol
Mod-er-a-tion, cymmedroldeb; gweddoldeb
Mod-u-la-tion, cyweiriad y llais, cynghaneddiad
Mol-est-a-tion, aflonyddwch, blinder
Mo-ment-a-ry, cythrymol, diflanedig
Mon-as-ter-y, mynachlog, mynachlys
Mo-nop-o-ly, gorfael, edwicaeth
Mo-ral-i-ty, moesolaeth, moesoldeb
Mor-tal-i-ty, marwoldeb, marw