Rhetorical Figures, Morphing, City Slang
* University of Kentucky's Glossary of Rhetorical Figures (in case you were trying to remember the word for the repetition of a consonant sound or of a vowel sound or other terms for language manipulation that you didn't even know you were using.)
* Sarangworld Word Morph (shows you the chain of changing one letter at a time to get you from, say, "slow" to "fast".)
* Learn the Slang of Multiple Cities (I don't know how up-to-date this is...)