| Term | Definition |
| pensive | adj/ thinking in a quiet way, often with a serious expression on your face |
| perforated | adj/ has a series of small holes made in it, often so that it will tear easily or allow light or air to enter |
| perilous | adj/ extremely dangerous |
| permanently | adv/ always and forever |
| permissible | adj/ allowed |
| perpetual | adj/ continuing forever in the same way |
| persuade | vt O+that/on/into/out of/inf\ make someone do or believe something by giving them a good reason to do it or by talking to them and making them believe it |
| pessimist | nc\ a person who always expects bad thing to happen |
| petition | nc +against/for~ \a document signed by a large number of people demanding or requesting some action from the government or another authority |
| phlegmatic | adj\ describes someone who tends not to get emotional or excited about things |
| pilfer | vi/t +from~\ steal things of small value |
| pillar | nc of~/ a strong column made of stone, metal or wood which supports part of a building |
| pinch | vi/t \ squeeze something, especially someone's skin, strongly between two hard things such as a finger and a thumb, usually causing pain |
| pity | nu \ a feeling of sympathy and understanding for someone else's unhappiness or difficult situation |
| placate | vt \ stop someone from feeling angry |
| plateau | nc \ a large flat area of land that is high above sea level |
| plausible | adj \ seeming likely to be true, or able to be believed |
| plea | nc \ the answer that a person gives in court to the accusation that they have committed a crime/of~/ an urgent and emotional request/for~/ |
| plump | adj \ having a pleasantly soft rounded body or shape |
| pollute | vt \ make an area or substance, usually air, water or earth, dirty or harmful to people, animals and plants, especially by adding harmful chemicals |
| ponder | vt +(wh ward) \ think carefully about something, especially for a noticeable length of time |
| posterity | nu \ the people who will exist in the future |
| postpone | vt +gerund +until \ delay an event and plan or decide that it should happen at a later date or time |
| prank | nc on~ \ a trick that is intended to be amusing but not to cause harm or damage |
| precaution | nc against~ \ an action which is done to prevent something unpleasant or dangerous happening |
| precede | vt +with \ be or go before something or someone in time or space |
| precept | nc +of \ a rule for action or behaviour, especially obtained from moral consideration |
| precisely | adv \ exactly |
| predict | vt +inf, that wh word \ say that an event or action will happen in the future, especially as a result of knowledge or experience |
| prelude | nc to~ \ something that comes before a more important event or action which introduces or prepares for it |
| prevail | vi \ get control or influence/over/ ;be common among a group of people or area at a particular time |
| prevalent | adj among~ \ existing very commonly or happening frequently |
| prior | adj to~ \ existing or happening before something else, or before a particular time; more important(before noun) |
| probe | nc into~ \ an attempt to discover information by asking a lot of questions |
| profound | adj \ felt or experienced very strongly or in an extreme way |
| prolific | adj \ producing a great number or amount of something |
| promulgate | vt \ spread beliefs or ideas among many people; announce something publicly, especially a new law |
| prop | nc \ an object which is used to support something by holding it up |
| proprietor | nc \ a person who owns a particular type of business, especially a hotel, a shop or a company that makes newspapers |