Reference Tools

Other Reference Tools

• Google Tools:  Words:   'define:etymology '  Translate.google.com reciprocal vs.  mutual'
  Word/Phrase frequency Google:   "have a mixed feeling"   vs  "have mixed feelings"
  Word/Phrase Frequency English-corpora.org 
• Merriam-webster.com
• Thesaurus.com
• Ozdic.com - collocation finder
• UsingEnglish.com - reference and forums