pitilessness

n [U].

pitch-pine, pitchblende, pitched, pitcher, pitchfork, piteous, piteously, piteousness, pitfall, pith, pith hat (also `pith helmet), pithily, pithiness, pithy, pitiable, pitiably, pitiful, pitifully, pitiless, pitilessly, piton, Pitot tube, pitta, pittance, pitter-patter, Pittsburgh, pituitary, pity, pityingly, pivot, pivotal, pixel, pixie (also pixy), pizza, pizzicato, Pk, pkg, pkt, Pl, pl of vertex.,