This english vocabulary set consists primarily of words which are not used in everyday language or speech, but which are surprisingly common in college-level reading or higher. It was compiled into Mnemosyne because I felt that too many of the existing english vocab decks either were too all-encompassing (including words like 'abandon' or 'mattress') and wasted time, or were vocation/situation specific (see: GMAT, Braille decks).
The majority of the card definitions are sourced from dictionary.com. Particularly confusing words have quotes attached alongside them for ease of learning.
The 700 Difficult GRE English Words is adapted from another list found, 'Difficult Barron's GRE Words,' found here: http://www.flashcardexchange.com/flashcards/view/473935. Many of the definitions, however, have been replaced for the sake of clarity and to minimize redundancy.