Döderlein's Hand-book of Latin Synonymes

Roget's Thesaurus

A Dictionary of English Synonymes and Synonymous or Parallel Expressions

Designed as a Practical Guide to Aptness and Variety of Phraseology

English Synonyms and Antonyms

With Notes on the Correct Use of Prepositions

Putnam's Word Book

A Practical Aid in Expressing Ideas Through the Use of an Exact and Varied Vocabulary

A Complete Dictionary of Synonyms and Antonyms

or, Synonyms and Words of Opposite Meaning

Roget's Thesaurus of English Words and Phrases