paternity n。 Fatherhood。
pathos n。 The quality in any form of representation that rouses emotion or sympathy。
patriarch n。 The chief of a tribe or race who rules by paternal right。
patrician adj。 Of senatorial or noble rank。
patrimony n。 An inheritance from an ancestor； especially from one's father。
patriotism n。 Love and devotion to one's country。
patronize v。 To exercise an arrogant condescension toward。
patronymic adj。 Formed after one's father's name。
patter v。 To mumble something over and over。
paucity n。 Fewness。
pauper n。 One without means of support。
pauperism n。 Dependence on charity。
pavilion n。 An open structure for temporary shelter。
payee n。 A person to whom money has been or is to be paid。
peaceable adj。 Tranquil。
peaceful adj。 Tranquil。
peccable adj。 Capable of sinning。
peccadillo n。 A small breach of propriety or principle。
peccant adj。 Guilty。
pectoral adj。 Pertaining to the breast or thorax。
pecuniary adj。 Consisting of money。
pedagogics n。 The science and art of teaching。
pedagogue n。 A schoolmaster。
pedagogy n。 The science and art of teaching
pedal n。 A lever for the foot usually applied only to musical instruments； cycles； and other machines。
pedant n。 A scholar who makes needless and inopportune display of his learning。
peddle v。 To go about with a small stock of goods to sell。
pedestal n。 A base or support as for a column； statue； or vase。
pedestrian n。 One who journeys on foot。
pediatrics n。 The department of medical science that relates to the treatment of diseases of childhood。
pedigree n。 One's line of ancestors。
peddler n。 One who travels from house to house with an assortment of goods for retail。
peerage n。 The nobility。
peerless adj。 Of unequaled excellence or worth。
peevish adj。 Petulant。 （irritable）
pellucid adj。 Translucent。
penalty n。 The consequences that follow the transgression of natural or divine law。
penance n。 Punishment to which one voluntarily submits or subjects himself as an expression of penitence。
penchant n。 A bias in favor of something。
pendant n。 Anything that hangs from something else； either for ornament or for use。
pendulous adj。 Hanging； especially so as to swing by an attached end or part。
pendulum n。 A weight hung on a rod； serving by its oscillation to regulate the rate of a clock。
penetrable adj。 That may be pierced by physical； moral； or intellectual force。
penetrate v。 To enter or force a way into the interior parts of。
penetration n。 Discernment。
peninsular adj。 Pertaining to a piece of land almost surrounded by water。
penitence n。 Sorrow for sin with desire to amend and to atone。
penitential adj。 Pertaining to sorrow for sin with desire to amend and to atone。
pennant n。 A small flag。
pension n。 A periodical allowance to an individual on account of past service done by him/her。
pentagram n。 A figure having five points or lobes。
pentavalent adj。 Quinqeuvalent。
pentad n。 The number five。
pentagon n。 A figure； especially； with five angles and five sides。
pentahedron n。 A solid bounded by five plane faces。
pentameter n。 In prosody； a line of verse containing five units or feet。
pentathlon n。 The contest of five associated exercises in the great games and the same contestants。
penultimate adj。 A syllable or member of a series that is last but one。
penurious adj。 Excessively sparing in the use of money。
penury n。 Indigence。
perambulate v。 To walk about。
perceive v。 To have knowledge of； or receive impressions concerning； through the medium of the body senses。
perceptible adj。 Cognizable。
perception n。 Knowledge through the senses of the existence and properties of matter or the external world。
percipience n。 The act of perceiving。
percipient n。 One who or that which perceives。
percolate v。 To filter。
percolator n。 A filter。
percussion n。 The sharp striking of one body against another。
peremptory adj。 Precluding question or appeal。
perennial adj。 Continuing though the year or through many years。
perfectible adj。 Capable of being made perfect。
perfidy n。 Treachery。
perforate v。 To make a hole or holes through。
perform v。 To acplish。
perfumery n。 The preparation of perfumes。
perfunctory adj。 Half…hearted。
perhaps adv。 Possibly。
perigee n。 The point in the orbit of the moon when it is nearest the earth。
periodicity n。 The habit or characteristic of recurrence at regular intervals。
peripatetic adj。 Walking about。
perjure v。 To swear falsely to。
perjury n。 A solemn assertion of a falsity。
permanence n。 A continuance in the same state； or without any change that destroys the essential form or nature。
permanent adj。 Durable。
permeate v。 To pervade。
permissible adj。 That may be allowed。
permutation n。 Reciprocal change； different ordering of same items。
pernicious adj。 Tending to kill or hurt。
perpendicular adj。 Straight up and down。
perpetrator n。 The doer of a wrong or a criminal act。
perpetuate v。 To preserve from extinction or oblivion。
perquisite n。 Any profit from service beyond the amount fixed as salary or wages。
persecution n。 Harsh or malignant oppression。
perseverance n。 A persistence in purpose and effort。
persevere v。 To continue striving in spite of discouragements。
persiflage n。 Banter。
persist v。 To continue steadfast against opposition。
persistence n。 A fixed adherence to a resolve； course of conduct； or the like。
personage n。 A man or woman as an individual； especially one of rank or high station。
personal adj。 Not general or public。
personality n。 The attributes； taken collectively； that make up the character and nature of an individual。
personnel n。 The force of persons collectively employed in some service。
perspective n。 The relative importance of facts or matters from any special point of view。
perspicacious adj。 Astute。
perspicacity n。 Acuteness or discernment。
perspicuous adj。 Lucid。
perspiration n。 Sweat。
perspire v。 To excrete through the pores of the skin。
persuade v。 To win the mind of by argument； eloquence； evidence； or reflection。
persuadable adj。 capable of influencing to action by entreaty； statement； or anything that moves the feelings。
pertinacious adj。 Persistent or unyielding。
pertinacity n。 Unyielding adherence。
pertinent adj。 Relevant。
perturb v。 To disturb greatly。
perturbation n。 Mental excitement or confusion。
perusal n。 The act of reading carefully or thoughtfully。
pervade v。 To pass or spread through every part。
pervasion n。 The state of spreading through every part。
pervasive adj。 Thoroughly penetrating or permeating。
perverse adj。 Unreasonable。
perversion n。 Diversion from the true meaning or proper purpose。
perversity n。 Wickedness。
pervert n。 One who has forsaken a doctrine regarded as true for one esteemed false。
pervious adj。 Admitting the entrance or passage of another substance。
pestilence n。 A raging epidemic。
pestilent adj。 Having a malign influence or effect。
pestilential adj。 having the nature of or breeding pestilence。
peter v。 To fail or lose power； efficiency； or value。
petrify v。 To convert into a substance of stony hardness and character。
petulance n。 The character or condition of being impatient； capricious or petulant。
petulant adj。 Displaying impatience。
pharmacopoeia n。 A book containing the formulas and methods of preparation of medicines for the use of druggists。
pharmacy n。 The art or business of pounding and dispensing medicines。
phenomenal adj。 Extraordinary or marvelous。
phenomenon n。 Any unusual occurrence。
philander v。 To play at courtship with a woman。
philanthropic adj。 Benevolent。
philanthropist n。 One who endeavors to help his fellow men。
philanthropy n。 Active humanitarianism。
philately n。 The study and collection of stamps。
philharmonic adj。 Fond of music。
philogynist n。 One who is fond of women。
philologist n。 An expert in linguistics。
philology n。 The study of language in connection with history and literature。
philosophize v。 To seek ultimate causes and principles。
philosophy n。 The general principles； laws； or causes that furnish the rational explanation of anything。
phlegmatic adj。 Not easily roused to feeling or action。
phonetic adj。 Representing articulate sounds or speech。
phonic adj。 Pertaining to the nature of sound。
phonogram n。 A graphic character symb