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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.
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cogent  | |
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cognate  | |
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cognizant  | |
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cohere  | |
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cohesion  | |
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cohesive  | |
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coincide  | |
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coincidence  | |
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coincident  | |
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collaborate  | |
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collapse  | |
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collapsible  | |
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colleague  | |
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collective  | |
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collector  | |
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collegian  | |
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collide  | |
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collier  | |
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collision  | |
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colloquial  | |
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colloquialism  | |
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colloquy  | |
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collusion  | |
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colossus  | |
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comely  | |
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comestible  | |
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comical  | |
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commemorate  | |
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commentary  | |
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commingle  | |
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commissariat  | |
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commission  | |
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commitment  | |
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committal  | |
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commodity  | |
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commotion  | |
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commute  | |
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comparable  | |
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comparative  | |
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comparison  | |
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compensate  | |
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competence  | |
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competent  | |
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competitive  | |
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competitor  | |
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complacent  | |
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complaisance  | |
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complaisant  | |
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complement  | |
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complex  | |
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compliant  | |
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complicate  | |
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complication  | |
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complicity  | |
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compliment  | |
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component  | |
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comport  | |
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composure  | |
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comprehensible  | |
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comprehension  | |
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