|  | Vocabulary Study Online By Level (VSOBL) is a Fast, Reliable, and Handy tool to prepare English exam vocabulary. (Available for all VIP accounts: US$2/Month). It has built-in word lists: 6000 IELTS words, 6000 TOEFL words, 5000 GRE words, and 3000 SAT words. You can load them by level with one click.
 | 
|   New    Known    Review | 
|   New    Known    Review | 
| proliferation | 
|     | 
| n. [الانتشار] rapid growth; spread; increase in size by reproduction Times of economic hardship inevitably encourage the proliferation of countless get-rich-quick schemes. | 
|   New    Known    Review | 
| prolific | 
|     | 
| a. [غزير] producing offspring or fruit in great abundance; fertile My editors must assume I'm a prolific writer: they expect me to revise six books this year!. | 
|   New    Known    Review | 
| prologue | 
|     | 
| n. [مقدمة] introduction, usually to a poem or play In Romeo and Juliet's prologue, Shakespeare introduces the audience to the feud between the Montagues and the Capulets. | 
|   New    Known    Review | 
|   New    Known    Review | 
|   New    Known    Review | 
| propensity | 
|     | 
| n. [النزوع] natural inclination; tendency or preference; predilection Convinced of his own talent, Sol has an unfortunate propensity to belittle the talents of others. | 
|   New    Known    Review | 
|   New    Known    Review | 
|   New    Known    Review | 
| protege | 
|     | 
| n. [محمي] a person guided and protected by a more prominent person Jason, as his father's protege, is destined to probe the mysteries of the hometown church. | 
|   New    Known    Review | 
| provisional | 
|     | 
| a. [الادخار المؤقت] temporary; provided for present need only Polanski is in provisional detention in Switzerland. | 
|   New    Known    Review | 
| pseudonym | 
|     | 
| n. [مستعار] pen name; fictitious name used when someone performs a particular social role Samuel Clemens' pseudonym was Mark Twain. | 
|   New    Known    Review | 
|   New    Known    Review | 
| pummel | 
|     | 
| v. [الارتدادية] beat or pound with fists; hit or strike heavily and repeatedly Swinging wildly, Pam tried to pummel her brother around the head and shoulders. | 
|   New    Known    Review | 
| pungent | 
|     | 
| a. [لاذع] stinging; sharp in taste or smell; caustic I'm bracing myself to be met by heat, humidity, and what Kerry describes as a pungent odor. | 
|   New    Known    Review | 
| putrid | 
|     | 
| a. [حيوان من ذوات الأربع] decomposed and foul-smelling; rotten; decayed The gangrenous condition of the wound was indicated by the putrid smell when the bandages were removed. | 
|   New    Known    Review | 
| pyromania | 
|     | 
| n. [هوس الاحراق] person with insane desire to set things on fire The detectives searched the area for the pyromania who had set these costly fires. | 
|   New    Known    Review |