This dictionary is both a quick reference for spelling and an authoritative guide to recommended word breaks, whether on paper or in electronic form. Based on Oxford Languages' research, it gives unambiguous guidance on spelling and form, including capitalization, hyphenation, UK and US spelling, and irregular inflections.

Reissued to publish alongside New Hart's Rules and the New Oxford Dictionary for Writers and Editors, the New Oxford Spelling Dictionary is the authoritative reference for spelling and word division. Prepared in consultation with professional editors and proofreaders, it is the essential guide for a wide range of people who work with the written word, whether on paper or in electronic form. The A to Z text was compiled using the unrivalled resources of Oxford Languages' language research programme; it gives unambiguous and authoritative guidance on spelling and form for over 110,000 words, including capitalization, hyphenation of compounds, and irregular inflections. US and UK spellings are covered in full. It also includes thousands of people, places, and other proper names. Full coverage of word division, indicating both primary (preferred) and secondary breaks for every suitable word, makes the New Oxford Spelling Dictionary the only reference suitable for editors, typesetters, proofreaders, and copy writers needing to make authoritative and consistent decisions relating to line endings. Its use will contribute to high-quality and accurate editorial standards. Together with the New Oxford Dictionary for Writers and Editors and New Hart's Rules it is an essential part of every editor's and writer's toolkit.