All lists are based on the TWL98 word list, which does not include proper names or one-letter words.

compound: All words formed by concatenating two other words, sorted alphabetically

compound2: As above, but with the requirement that each part be at least three letters

compound3: All words that can be formed by concatenating two other words in three different ways

compound4: All words that can be formed by concatenating two other words in four different ways

dup: All words formed by repeating a single string twice

anagrams: All sets of anagrams (including sets with only one word)

anagrams2: All sets of anagrams (not including sets with only one word) - 12,301 sets

cryptograms: All sets of cryptograms (including sets with only one word)

cryptograms2: All sets of cryptograms (not including sets with only one word)

double: All words containing 3 doubled letters

reverse: All words that are also words when spelled backwards.

aeiou: All words with all vowels (not including Y) in alphabetical order.

aeiouy: All words with all vowels (including Y), not necessarily in order.

starts: All maximal words such that all initial segments of length 2 or greater are words.

startend: All maximal words such that all initial and final segments of length 2 or greater are words.

palindrome: All palindromes.

left: All words that can be typed using only the left hand.

right: All words that can be typed using only the right hand.

3letter: All words with 5 or more letters but 3 or fewer distinct letters.

The longest words with no vowels (allowing Ys) are TSKTSKS, GLYCYLS, and RHYTHMS.

The word with the most appearances of a single letter is STRESSLESSNESSES, with 8 Ss.

The longest words with no repeated letters are DERMATOGLYPHICS and UNCOPYRIGHTABLE.

The only word with a tripled letter is BRRR.

The only words with a tripled letter sequence are BRRR, RATATAT, and RATATATS.

The only words with a three consecutive double letters are BOOKKEEPER, BOOKKEEPING, BOOKKEEPERS, and BOOKKEEPINGS.

The only words with all vowels (including Y) in order are: ABSTEMIOUSLY, ADVENTITIOUSLY, AUTOECIOUSLY, FACETIOUSLY, and SACRILEGIOUSLY

The only word containing 16 different letters is PHENYLTHIOCARBAMIDES.

The word with the most vowels (regardless of whether Y is counted) is ETHYLENEDIAMINETETRAACETATE(S) (the plural also being the longest word).

The word with the most consonants (regardless of whether Y is counted) is ELECTROENCEPHALOGRAPHICALLY.

The words with the most consecutive vowels (excluding Y) are COOEEING, MIAOUED, MIAOUING, and QUEUEING.

Behind TSKTSKS, the words with the most consecutive consonants are BORSCHTS, CATCHPHRASE(S), CRWTHS, LATCHSTRING(S), TSKTSK(ED|ING), WELTSCHMERZ(ES).

The only words with the same letter appearing as every other letter for 6 times are DIVISIBILITIES and INDIVISIBILITIES.