Useful links

Dictionaries

• http://www.wordreference.com/ Good enough, and it also has the very useful functionality of linking the forum from the dictionary, if there is a topic related to your search.
• http://www.thefreedictionary.com/ One of the best dictionaries.
• http://www.urbandictionary.com/ Can be useful for slang.
• http://www.collinsdictionary.com/ The thesaurus is especially useful.
• http://it.bab.la/ Not bad, but sometimes inaccurate.

If you want to make suggestions, see here: link