The thing is that it's not huge. A packed in-memory representation should still be easily traversable and take up less than the space of a plain list of words.

The thing is that it's not huge. A packed in-memory representation should still be easily traversable and take up less than the space of a plain list of words. See also http://sun.aei.polsl.pl/~mciura/publikacje/lexicon.pdf http://sun.aei.polsl.pl/~mciura/publikacje/lexicon.pdf for more ideas about in-memory lexicon representation.