Oxford learner's wordfinder dictionary

Allows the user to go from the known to the unknown, by grouping vocabulary around 640 keywords. Shows words related by meaning and use: synonyms, opposites, derivatives, the verbs to go with the nouns, etc. Gives all the words needed to talk about a particular subject: invaluable for preparing a talk, planning an essay or writing a letter. Provides Topic Areas which suggest a framework for systematic vocabulary expansion. Helps with structures and linguistic problem areas. An ideal resource for revision.