Pleidiad, n. a siding with; partisanship
Pleidio, v. to take a part
Pleidiol, a. adherent; belonging to a party
Pleidydd, n. a partisan
Pleiniad, n. a radiation
Plent, n. a ray; a slide
Plentyn, n. a child, a baby
Plentynaidd, a. childish, babyish
Pleth, n. a plait, a braid
Plethol, a. plaiting, wreathing