nonplussed      greatly surprised

noxious         harmful

numb            without ability to feel or move

numbness        without ability to move a finger

obdurate        stubborn， impenitent

obsequious      too eager to obey or serve

officious       too eager or ready to help， offer advice

opprobrious     showing scorn or reproach

ostentation     display to obtain admiration or envy

ostentatious    fond of

ostracism       shut out from society， refuse to meet， talk

ostrich         fast-running bird unable to fly

outset          start

overhaul        examine thoroughly to learn about the condition

overwhelm       weigh down， submerge

palpability     can be felt， touched， understood

palpitate       tremble， beat rapidly and irregularly

parenthesis     sentense within another one， smth separated

parsimonious    too economical， miserly

peccadillo      small sin； small weakness in one's character

penchant        taste， liking， inclination

penury          poverty

peremptory      not to be disobeyed or questioned

perennial       lasting for a long time （eg. a year）

perfidious      treacheres， faithless

perfidy         treachery； breaking of faith

perfunctory     done as a duty withour care

perjury         wilful fasle statement， unlawful act

pernicious      harmful， injurious

persevere       keep on steadily， continue

pertain         belong as a part， have reference

pest            destructive thing or a person who is nuisance

petulant        unreasonably impatient

pied            of mixed colors

pinch           be too tight， take between the thumb and finger

pious           dutifull to parents； devoted to religion

pique           hirt the pride or self-respect， stir （curiosity）

pitfall         covered hole as a trap， unsuspected danger

pith            essential part， force， soft liquid substance

placate         soothe， pacify， calm

plaque          flat metal on a wall as a memorial

plea            request

plead           address a court of law as an advocate

plethora        glut

pliant          pliable， easile bent， shaped or twisted

plod            continue doing smth without resting

pluck           pull the feathers off， pick （eg. flowers）