In our editing and revising, the editors at Editorial Resources use industry-recognized reference works including:

Webster's 10th Collegiate Dictionary (editorial industry standard)

Merriam-Webster Dictionary

Oxford English Dictionary (pricey, but still the ultimate word origin source)

The Chicago Manual of Style (formatting, usage issues for publication)

Modern Language Association (MLA) Style Manual (general academic style guide)

Bartlett's Quotations (familiar quotations from various sources)

Roget's Thesaurus (best source for synonyms)