pessimistic

a.悲观的，悲观主义的，厌世的

perturbed, perusal, peruse, pervade, pervasion, pervasive, pervasively, pervasiveness, perverse, perversely, perverseness, perversity, perversion, perversity, pervert, peseta, pesky, peso, pessary, pessimism, pessimist, pessimistically, pest, pest control, pester, pesticide, pestilence, pestilent, pestle, pet, pet name, pet shop, pet subject, petal, petalled (US petaled), petard, peter, petit bourgeois, petite, petition, petitioner,