porous  | a. full of pores; able to absorb fluids; full of tiny pores that allow fluids or gasses to pass through  |  
 posterity  | n. descendants collectively; the race that proceeds from a progenitor; future generations  |  
 posture  | n. position or arrangement of the body and its limbs  |  
 precarious  | a. uncertain; risky; dangerously lacking in security or stability  |  
 precedent  | n. act or instance that may be used as example in subsequent similar cases  |  
 precipice  | n. cliff; overhanging or extremely steep mass of rock; dangerous position  |  
 precipitous  | a. extremely steep; descending rapidly, or rushing onward  |  
 preface  | n. a short introductory essay preceding the text of a book  |  
 premiere  | a. first public performance, as of a movie or play; premier  |  
 preponderance  | n. superiority in numbers or amount  |  
 prerequisite  | n. something that is required in advance; necessity; required as a prior condition  |  
 prescribe  | v. dictate; guide; advise the use of; assert a right; claim  |  
 preside  | v. be set, or to sit, in the place of authority; occupy the place of president, chairman, moderator, director; direct, control, and regulate, as chief officer  |  
 prestigious  | a. honored; respected; reputed; exerting influence by reason of high status  |  
 prior  | a. preceding in the order of time; former; previous  |  
 prone  | a. inclined; lying face downward; having a tendency  |  
 propensity  | n. natural inclination; tendency or preference; predilection  |  
 proprietor  | n. one who has legal title to something; owner  |  
 propriety  | n. fitness; correct conduct; quality of being proper; appropriateness  |  
 prospector  | n. someone who explores an area for mineral deposits  |  
 prosper  | v. flourish; thrive; gain in wealth; grow stronger  |  
 pseudonym  | n. pen name; fictitious name used when someone performs a particular social role  |  
 pterodactyl  | n. extinct flying reptiles that existed during the Jurassic and Cretaceous periods  |  
 pulchritude  | n. great physical beauty and appeal; attractive moral excellence; moral beauty  |  
 punctilious  | a. marked by precise accordance with details  |  
 pungent  | a. stinging; sharp in taste or smell; caustic  |  
 quintessence  | n. pure, highly concentrated essence of a thing  |  
 rally  | v. call up or summon; call together for a common purpose  |  
 rankle  | v. grow worse; cause persistent irritation or resentment  |  
 raze  | v. destroy completely; scrape or shave off  |  
 recant  | v. retract a previous statement; sing over again; utter repeatedly in song  |  
 receptacle  | n. container; reservoir; an object or space used to contain something  |  
 reclamation  | n. rescuing from error and returning to a rightful course  |  
 recluse  | n. one who lives in solitude; withdrawn from the world; reclusive  |  
 recompense  | v. render an equivalent to, for service, loss; requite; remunerate; compensate; give in return; pay back  |  
 recourse  | n. one that is turned or applied to for aid or security; resort for help or protection; access or admittance  |  
 rectitude  | n. uprightness; moral virtue; correctness of judgment  |  
 redeem  | v. purchase back; regain possession of by payment; ransom or rescue from captivity; pay penalty; make amends for  |  
 redundant  | a. exceeding what is necessary or natural; repetitious; excessively wordy  |  
 refugee  | n. one who flees to shelter, or place of safety  |  
 regimen  | n. prescribed diet and habits; a systematic plan for therapy; governmental rule or control  |  
 rejoinder  | n. retort; comeback; answer to a reply  |  
 rejuvenate  | v. make young again; restore to youthful vigor or appearance  |  
 relent  | v. give in; become more compassionate or forgiving; cause to soften in attitude or temper  |  
 reminisce  | v. recollect and tell of past experiences or events; talk or write about memories of the past, especially pleasant memories  |  
 remnant  | n. remainder; small part or portion that remains after the main part no longer exists  |  
 rendezvous  | n. meeting at a prearranged time and place; popular gathering place; prearranged meeting point for troops or ships  |  
 rendition  | n. translation, often interpretive; performance of a musical or dramatic work  |  
 renege  | v. deny; go back on; fail to fulfill promise or obligation  |  
 repertoire  | n. list of works of music or drama; class of compositions in a genre; range or number of skills  |  
 replica  | n. copy or reproduction of a work of art  |  
 reproach  | v. express disapproval or disappointment; bring shame upon; disgrace  |  
 resilient  | a. elastic; having power of springing back or recover readily  |  
 restive  | a. impatient under restraint or opposition; resisting control; difficult to control  |  
 resuscitate  | v. restored to life; restore consciousness, vigor, or life to; revive  |  
 retaliate  | v. do something harmful or negative to get revenge for some harm; fight back or respond in kind to an injury or affront  |  
 retentive  | a. holding; having quality, power, or capacity of retaining, as to retain knowledge with ease  |  
 retinue  | n. following members; attendants accompanying high-ranking person  |  
 revenge  | v. do punishment in return for injury or insult; avenge  |  
 rhetoric  | n. art or study of using language effectively and persuasively; insincere language  |  
 riddle  | v. pierce with numerous holes; perforate; permeate or spread throughout  |  
 rowdy  | n. rough, disorderly person; boisterous person  |  
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