Lingolex
Lingolex.com: Refranes Y Dichos (Common Sayings and Proverbs)
This site has common sayings or idiomatic expressions are widely used in everyday conversations. Broaden your Spanish vocabulary and learn the phrases that make you sound like a native speaker when you use this site by Lingolex.
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Word Detective
The Word Detective provides great information on the origin of certain words and phrases that are everyday lingo. Click on Index and chose from the alphabetical list or type the word you are looking for in the search box.