Mobysaurus Thesaurus is a comprehensive (30,000+ roots and over 2,500,000 synonyms), feature-rich, off-line English thesaurus that brings the exact word to your mind, serving your everyday speaking and writing purposes - at no cost. Other features include cross-referencing, fast wildcard search, ability to find related/synonymous roots (which is the fastest and simplest way for serious word hunters like you to go deep for the ultimate synonym of choice, from the word you are working with), keeping search history and favorites across sessions, system-wide hot key support (which automatically looks up highlighted words in most programs), online referencing, tabbed interface, full-text clipboard/print support, suggest-as-you-type and auto-completion, WordWeb support and more.