1) Big name in reference books 2) Big name in thesauri 3) Big name in thesauruses 4) British synonymist 5) Celebrated synonymist 6) Compiler of helpful lists 7) Compiler of synonyms 8) Compiler of word book 9) Creator of many word lists 10) Doctor 11) Famed synonym compiler 12) Famous lexicographer 
[n] - English physician who in retirement compiled a well-known thesaurus (1779-1869)
Peter Mark Roget noun English physician who in retirement compiled a well-known thesaurus (1779-1869)