How major style guides rule on "naïve"
AP drops the diaeresis; Chicago and most academic style retain it to mark the separated vowels.
The disagreement on "naïve" is an example of whether to retain accents from source languages, the category of style-guide differences that most often confuses copy editors and creates inconsistency across long documents. Below is a guide-by-guide breakdown, drawn directly from the published editions cited.
| Style guide | Preferred form |
|---|---|
| AP Stylebook (2024–2025 Edition) | naive |
| Chicago Manual of Style | naïve |
| MLA Handbook | naïve |
| APA Publication Manual | naïve |
| Merriam-Webster Dictionary | naive (also naïve) |
What the divergence actually means
Unlike many compound-modernization decisions where style guides eventually converge, "naïve" continues to show genuine divergence between major guides. The AP Stylebook treats this as a settled call; Chicago Manual leaves more flexibility; and Merriam-Webster, as a descriptive dictionary, records both forms. Source: Chicago Manual of Style, 17th Edition
The APA Publication Manual diverges here: it specifies "naïve" as the form preferred for academic writing in psychology and behavioral-science journals. APA's reasoning typically tracks scientific publishing conventions rather than newspaper-style economy. Source: APA Publication Manual, 7th Edition
Merriam-Webster lists "naive (also naïve)", which serves as the lexicographic baseline for U.S. style decisions. Because Merriam-Webster's entries reflect aggregated published usage rather than editorial preference, when a guide says "follow Merriam-Webster", as APA does, that effectively delegates the call to whichever spelling has dominated the published corpus. Source: Merriam-Webster Dictionary
Garner's Modern English Usage classifies the "naïve" / "naive" pair on its Language-Change Index, a five-stage scale measuring whether a once-disputed form has been accepted into Standard English. For whether to retain accents from source languages, Garner's typically rates the dominant form at Stage 4 ("ubiquitous but objected to by traditionalists") or Stage 5 ("fully accepted"). Source: Garner's Modern English Usage, 5th Edition
Practical guidance for editors
For working writers, the practical rule is straightforward: in journalism, follow AP; in academic writing in the humanities, follow MLA or Chicago; in social-science publishing, follow APA; in book publishing, follow Chicago. When no house style applies, Merriam-Webster's main entry is the safest default. The differences across these guides on "naïve" reflect not disagreement about correctness but different audiences and editorial pressures.
Editorial context
The Associated Press Stylebook's 2019 edition crystallized a long-brewing shift among major U.S. journalism authorities by standardizing naive without diaeresis, a change driven by the demands of digital workflows where diacritics complicate search optimization and cross-platform rendering. This update, part of a sweeping revision affecting hundreds of foreign loanwords, addressed practical hurdles like limited mobile input options and inconsistent font support, echoing typewriter-era simplifications from the 1920s onward. Before 2019, AP had tolerated both forms, but the pivot aligned newsroom practice with dominant American usage patterns evident in mass-market corpora. Consider a typical wire story: The whistleblower was naive to expect corporate loyalty amid the scandal. While academic presses cling to the marked variant for phonetic clarity, the AP's decision has rippled through dailies and online outlets, prioritizing legibility and speed over purism in high-stakes, deadline-driven environments.
Cross-references
For the dictionary entry, frequency data, and pronunciation of naïve, see the main word page. For other style-guide spelling decisions in this category, browse all style-guide spelling rulings.