Have you ever read a great classic and come across an unfamiliar word? There are many editions of Heart of Darkness. This one is worth the price if you would like to enrich your vocabulary, whether for self-improvement or for preparation in advance of entrance examinations. Each page is annotated with a mini-thesaurus of uncommon words highlighted in the text. Not only will you experience a great classic, but learn the richness of the English language with synonyms and antonyms at the bottom of each page.