Roget's Thesaurus
Roget's Thesaurus is an English thesaurus. First published in April 1852, it was written by Peter Mark Roget (after whom it is named).[1] In his foreword to the original edition, Roget said concerning the thesaurus:
It is now nearly fifty years since I first projected a system of verbal classification similar to that on which the present work is founded. Conceiving that such a compilation might help to supply my own deficiencies, I had, in the year 1805, completed a classed catalogue of words on a small scale, but on the same principle, and nearly in the same form, as the Thesaurus now published.[2]
The original manuscript of the thesaurus can be found in the Karpeles Manuscript Library Museum. It began with 15,000 words and has been increasing since.[3]