Hi everybody,
If you are interested in user-friendly online English dictionaries and thesauruses, you might want to have a look at http://www.askdefine.com.
Looking up a word is extremely easy. Simply enter the target word in your browser address bar followed by a period and “askdefine.com”, e.g. “Atlantis.askdefine.com”.
You’ll find another good online dictionary and thesaurus at http://www.onelook.com.
HTH.
Cheers,
Robert