http://www.vocabulary.co.il/synonyms/high-school/high-school-synonym-match/
http://www.edhelper.com/language/synonyms_Grade7_0.htm
http://www.sadlier-oxford.com/phonics/synonyms/synonyms.htm
http://www.thesaurus.com/
http://www.edhelper.com/language/synonyms_Grade7_2.htm