Other-Wordly: words both strange and lovely from around the world

Dictionary of Word Roots and Combining Forms

English Words from Latin and Greek Elements

Mental Floss: The Curious Compendium of Wonderful Words: A Miscellany of Obscure Terms, Bizarre Phrases & Surprising Etymologies

Word Perfect: Etymological Entertainment For Every Day of the Year

Why Do We Say That? 101 Idioms, Phrases, Sayings & Facts! A Brief History On Where They Come From!

American English File Second Edition: Level 1 Student Book: With Online Practice

Differentiating Instruction and Assessment for ELLs, with Poster: A Guide for K–12 Teachers

Words on the Move: Why English Won't - and Can't - Sit Still (Like, Literally)

Nine Nasty Words: English in the Gutter: Then, Now, and Forever