The ‘total count’ is in hundreds of thousands, especially since the test includes some specialized terms. A comprehensive dictionary is estimated to have over a

The ‘total count’ is in hundreds of thousands, especially since the test includes some specialized terms. A comprehensive dictionary is estimated to have over a million words, but that might include trivial variations. Meanwhile, a native speaker's everyday dictionary is typically on the order of ten to twenty thousand words. No way that their ‘reserve’ knowledge extends twenty times beyond this. I'd guess maybe several thousand infrequent and specialized words, with which the total knowledge would still clock in at low tens of thousands.