PUBLIC MARKS with tags synonym & search

Big Huge Thesaurus Synonyms, antonyms, and rhymes (oh my!) (Also blog post ideas and story plot/logline resources for writers.) This site is based on source data from the Princeton University WordNet database, the Carnegie Mellon Pronouncing Dictionary, and suggestions from thousands of people on the internet just like you.

WordNet® is a large lexical database of English, developed under the direction of George A. Miller. Nouns, verbs, adjectives and adverbs are grouped into sets of cognitive synonyms (synsets), each expressing a distinct concept. Synsets are interlinked by means of conceptual-semantic and lexical relations. The resulting network of meaningfully related words and concepts can be navigated with the browser. WordNet is also freely and publicly available for download. WordNet's structure makes it a useful tool for computational linguistics and natural language processing.

digs Google synonyms twice for the ~synonym search results.