Pen-man-ship, ysgrifen ddawn
Pen-ny-worth, ceiniogwerth
Pen-sion-er, gwobrwas, cyflogddyn
Pen-ta-gon, pumochr
Pen-te-cost, y pentecost; y Sulgwyn
Pen-u-ry, tlodi, anghen
Per-cep-tion, gwelediad; syniad
Per-cep-tive, gwelediannol; syniol
Per-cus-sion, tarawiad, ergydiad
Per-di-tion, colledigaeth, dystryw