Necessarily.com

Vocabulary List
A free mailing list which features the meaning and pronunciation of a different word daily.
www.vocabularylist.com/

Mot du Jour - French Word of the Day
Provides a new French word emailed daily with pronunciation, example of usage, and related words. Includes archive of previous French words, and subscription information.
french.about.com/

Merriam-Webster's Word of the Day
A searchable dictionary and thesaurus. Includes word games, daily word with its meaning, history, usage in sentences, and etymology.
www.m-w.com/

Word of the Day - Spanish Language
Contains a word from the Spanish vocabulary each day of the month.
spanish.about.com/

A Word A Day - Today's Word
Audio clip, definition, and example usage.
wordsmith.org/

Word Traps
Provides an alphabetical list of words which are often misused. Includes definition and corrected usage.
www.stage-door.org/

What's the Word
Online game to learn reading and expand vocabulary. From Funbrain.com.
funbrain.com/

Dolch Word List
A flash-card type vocabulary list of 220 common words.
www.come-over.to/

German Word of the Day
Learn German words with meanings and pronunciations.
www.transparent.com/

Hebrew - Word of the Day
Offers mailing list two or three times per week featuring modern day and biblical Hebrew words. Provides information on subscribing.
www.amerisoftinc.com/