This is the best thesaurus there is. It supplies more synonyms, analogs, parallels, equivalents and comparable words in English than any other source, online or off. No other thesaurus comes near to it for completeness or breadth. Compiled in dictionary form, like the one in your word processors, there's no index or cross-referencing [but of course this siPDF version is searchable :)]. Just look up a word, any word, and it proceeds to overwhelm you with alternative choices (a total of 1.5 million synonyms are presented in 1,361 pages), including short phrases and only mildly related words. Rather than being a problem of imprecision, the Finder's broad inclusiveness prods your imagination and prompts your recall.