Word Lists for competitive Scrabble

The Scrabble FAQ doesn't itself offer any substantial word lists[1], but numerous other sites provide a good variety of useful ones.

TWL06:

Ottawa Scrabble Club Study Room

Lists in usefulness order (computer simulation frequencies), bingo stems, short words, vowel/consonant dumps; also Web-based quizzes

Paul Phillips

All 7lw & 8lw in probability order; plus interesting transitional OWL98->TWL06 word lists

John O'Laughlin

Creative, often new, lists

Mike Wolfberg

new hooks, new word definitions by word length, high probability 7lw & 8lw

Rick Wong

Several lists, including definitions of 2- and 3-letter words.

John Chew

plausible phonies, phonies with anagrams, and 6-to-make-8 "unistems" as well as anamonics [see explanations in FAQ] and TWL change explanations

Dallas, TX, club

2- and 3-letter words, stems[3], subject-matter groups, endings and TWL changes

Bob Weiss

2- and 3-letter words, all hooks, vowel-heavy and -light, stems, pre- and suf-fixes [from Internet Archive]

Brian Wagner

vowels-heavy, JKQXZ, pre- and suf-fixes

Jim Homan

OSPD2->3 additions [only SPAZES and HERPESES were deleted]

Thomas Ford

2->3 and 3->4 hooks, vowel dumps, jqxz words, major stems

Jonn Dalton

2->3->4->5->6 hooks, all 6->7 and 7->8 stems, more

Jim Geary

OTaCWL 2s and 3s

Lawren Freebody

topical lists, including OSW-only twos and threes

Michael Waddell

lists, including quizzes

Japanese words

in TWL98

Amit Chakrabarti

Words with multiple spellings and acronyms/portmanteaux

SOWPODS[4]:

Hervé

All 7s and 8s by alphragram (PDF file)

ASPA

2-, 3- and 4-letter words; definitions of 3s JQXZ words; high-vowel words; stems; surprising words

Bob Jackman

2-, 3- and 4-letter words, high-prob 7s and 8s and SOWPODS crossover lists

John Holgate

Top 7lw and 8lw stems, hooks of 2-letter words, Q w/o U, JQXZ, high-vowel 7lw and 8lw

Martin Gardner

mostly high-probability words

[1] Other than a small set of changes between OSPD3 and the current OTCWL.

[2] For a sorting out of all the dictionary terminology, see John Chew's explanation.

[3] A stem is a set of letters considered with respect to letters which can be added to make an anagrammable set.

[4] "SOWPODS" is the union of the British and North American lexicons.