Is ‘thesaurus’ a Scrabble US Word? Yes
Is ‘thesaurus’ a Scrabble UK Word? Yes
Is ‘thesaurus’ a Words With Friends Word? Yes
Is ‘thesaurus’ an Adjective? No
Is ‘thesaurus’ an Adverb? No
Is ‘thesaurus’ a Noun? Yes
Is ‘thesaurus’ a Verb? No
a book containing a classified list of synonyms;

See also: Words That Rhyme With THESAURUS →