Merriam-Webster's Dictionary and Thesaurus

The Merriam-Webster Dictionary of Synonyms and Antonyms

Merriam-Webster's Collegiate Dictionary, 11th Edition

Merriam-Webster's Collegiate Thesaurus, Second Edition

Merriam-Webster's Guide to Punctuation and Style

Merriam-Webster's Rhyming Dictionary

Merriam-Webster's Dictionary for Children

Merriam-Webster's Pocket Dictionary

New American Roget's College Thesaurus in Dictionary Form (Revised &Updated)

Oxford Advanced Learner’s Dictionary, 8th edition (Oxford Advanced Learner's Dictionary)

The Well-Spoken Thesaurus: The Most Powerful Ways to Say Everyday Words and Phrases