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）

　　plummet         fall， plunge， steeply

　　plunge          move quickly， suddenly and with force

　　poise           be ready， be balanced， self-possession

　　ponderous       heavy， bulky， dull

　　posture         state， attitude； adopt a vain

　　poverty         state of being poor

　　precept         moral instruction

　　precipitate     throw smth violently down from a height

　　precursory      peliminary， anticipating

　　predilection    special liking， mental preference

　　preempt         obtain by preemption or in advance

　　premature       doing or happening smth before the right time

　　presage         warning sign

　　pristine        primitive

　　procrastination keeping on putting off

　　prodigious      enormous， wonderful