THESAURUS AND DICTIONARY ONLINE
http://thesaurus.reference.com/

VOCABULARY BUILDER
http://supervoca.com/

FUN ACTIVITIES FOR BUILDING VOCABULARY -- PICK THE LEVEL SUITABLE FOR YOU!
http://syndicate.com/

WORD GAMES TO TEACH VOCABULARY:  USES ROOTS, PREFIXES AND SUFFIXES!
http://www.vocabulary.com/VUlevel3S137.html

FUN WORD GAMES
http://www.funster.com/cgi-bin/lg3/lg/TRDT/a0/7FBCC174656163686572313036/a/lobby.dyn

BLACK DOG WORD GAMES -- MANY TYPES
http://blackdog4kids.com/games/word/

VARIED WORD GAMES
http://www.eastoftheweb.com/games/