Reformas ortográficas recientes

In December 2010, the Real Academia Española and the Asociación de Academias de la Lengua Española published a new edition of the Ortografía de la lengua española — the official rulebook of Spanish spelling, the first major revision in 11 years. It removed several accents that had been obligatory for generations, renamed three letters of the alphabet, demoted ch and ll from independent letters to digraphs, and tidied up the spelling of a handful of common words. None of it was huge in isolation; the cumulative effect is that any book published before 2010 will look subtly different from a book published after it.

This page surveys the most visible changes so you can read older texts without confusion and write modern Spanish without making "corrections" that are no longer corrections. It is a B1 page, because the issues only start mattering once you're reading native materials and noticing inconsistencies between, say, a 1990 novel and a 2020 newspaper article.

Change 1: solo no longer takes an accent

Pre-2010 Spanish distinguished two words solo:

• sólo (adverb) = "only" (synonym of solamente).
• solo (adjective) = "alone".

The accent on sólo was a tilde diacrítica — a stress mark whose only job was to disambiguate the two meanings in writing (both forms are pronounced identically). The 2010 Ortografía abolished this diacritic. Both meanings are now spelled solo, with the accent reserved for sentences where genuine ambiguity arises — and even then, the academies say the writer should usually rephrase rather than reach for the old accent.

The reform was controversial. Many editors, novelists, and journalists — including the writer Arturo Pérez-Reverte, a member of the RAE itself — publicly continued to write sólo for the adverb. So you will routinely see the old spelling in:

• Books published before 2010.
• Books published after 2010 by writers who deliberately retain the older norm.
• Texts copy-edited by older proofreaders.

Recognising sólo as adverbial "only" is part of literate adult reading in Spanish, even though you should not write it that way yourself unless you have a specific stylistic reason.

When ambiguity does arise

The academies acknowledge a residual case: Trabajo solo los lunes can mean "I only work on Mondays" (adverb) or "I work alone on Mondays" (adjective). The 2010 reform's official position is that the writer should disambiguate by rephrasing — Trabajo únicamente los lunes or Trabajo solo los lunes, sin compañía. The 2023 Ortografía update relaxed this slightly, allowing the accent again in genuinely ambiguous contexts, but rephrasing remains the preferred fix.

Change 2: Demonstrative pronouns no longer take accents

The same logic applied to a second family of tildes diacríticas. Before 2010, the demonstratives carried an accent when used as pronouns (standing in for a noun) but not when used as adjectives (modifying a noun).

The 2010 Ortografía removed the diacritic from the pronoun forms. The neuter forms esto, eso, aquello never carried an accent because they have no adjectival counterpart to be confused with — they were always unambiguous.

As with solo, this is one of the most-resisted changes. You will still see éste, ése, aquél in older books and in writing by traditionalist authors. The 2023 Ortografía update again allows the accent in cases of genuine ambiguity, but the unaccented form is the modern default.

Change 3: Letter names standardised — be, uve, uve doble, ye

Before 2010, several letters had multiple regional names, and the Ortografía enshrined regional variation in the alphabet itself. The reform standardised letter names across the Spanish-speaking world.

The reform formally accepts i griega as a tolerated alternative for y, and Latin American Spanish still widely uses be larga / ve corta for b/v (because the official names sound identical to each other in seseo-speaking areas). In peninsular Spanish, be and uve sound clearly different (be ends in /e/, uve in /e/ after /u/), so the new names work fine without disambiguation.

Change 4: ch and ll are no longer letters of the alphabet

For most of the 20th century, the Spanish alphabet had 29 letters: the 26 of the Latin alphabet, plus ch, ll, and ñ. Dictionaries gave ch and ll their own sections, and words beginning with ch- (chico, chocolate, chubasco) appeared after all words beginning with cu-. The 1994 RAE congress already reclassified them for alphabetisation purposes; the 2010 Ortografía finished the job by declaring them digraphs (two-letter combinations spelling a single sound), not letters.

The Spanish alphabet today has 27 letters: the 26 Latin letters plus ñ.

What this means in practice:

• A modern dictionary alphabetises chico between chévere and chimenea, but in the section labelled C, not in a separate Ch section.
• The letter count in literacy materials and Scrabble-style word games has been updated.
• Pre-1994 dictionaries (anything older than the DRAE 21st edition) still split ch and ll out — be aware when consulting older reference works.

The letter ñ is not a digraph and was never under threat. It is a full member of the alphabet, with its own dictionary section, and is the typographic icon of the Spanish language.

Change 5: Monosyllables with diphthongs lose their accents

A subtler change concerns the monosyllabic principle: words pronounced as a single syllable do not take a written accent (because Spanish stress rules don't apply to monosyllables, and there is nothing to disambiguate). A handful of common words contain etymological diphthongs that, in conservative pronunciation, were sometimes split into two syllables — and accordingly carried an accent.

The 2010 reform declared these words monosyllables for orthographic purposes, regardless of how the individual writer pronounces them, and removed the accent.

The 2010 Ortografía is permissive on these: speakers who pronounce guion in two syllables (gui-ón) may still write guión — but the unaccented form is the recommended default.

Change 6: Loanwords and adapted forms

The reform also formalised the adaptation policy for foreign loanwords. The general principle: if a loanword is fully integrated into Spanish, it adopts Spanish spelling rules (so cederrón for "CD-ROM", or yacusi for "Jacuzzi" — though the originals remain acceptable). If it is treated as a foreign word (in italics, in a foreign script), it keeps its original spelling.

In peninsular Spanish, the adapted forms are used somewhat less consistently than in formal Latin American Spanish; everyday peninsular writing still freely writes whisky, jacuzzi, CD-ROM, fútbol (this last one adapted long ago) — register and the specific publication matter.

Change 7: psicología, mnemotecnia — silent initial consonant

A long-standing peninsular tendency simplifies the initial ps-, mn-, and similar consonant clusters in learned Greek-origin words by dropping the silent first letter. The 2010 Ortografía formalised both spellings as acceptable, with the simplified form slightly preferred:

In actual peninsular usage, psicología and psiquiatra are still overwhelmingly preferred — the simplified forms have not caught on as enthusiastically as the academies hoped. Recognise both; write whichever your editor or institution prefers.

What this means for the learner

You will encounter Spanish texts written under three different sets of conventions:

1. Pre-1959 (and older literary editions) — older accentuation rules, some now-archaic spellings (fué, dió, vió, sometimes aún-style accents on different patterns).
2. 1959–2010 — the modern but pre-reform conventions: sólo with accent for the adverb, éste/ése/aquél with accents for pronouns, guión with accent, ch and ll counted as letters.
3. Post-2010 — the current standard: solo, este/ese/aquel, guion, 27-letter alphabet.

Books, articles, and reference works from each era carry their era's conventions. Don't "correct" them mentally; learn to recognise both.

Common Mistakes

Key takeaways

• The 2010 Ortografía de la lengua española updated several long-standing conventions; older books retain the older spellings.
• Solo (adverb and adjective both) — no more accent. Sólo is officially deprecated but widely retained by traditionalist writers.
• Demonstrative pronouns este, ese, aquel — no more accent to distinguish pronoun from adjective. Context disambiguates.
• Letter names standardised: be, uve, uve doble, ye are the current official names.
• Ch and ll are no longer independent letters — the alphabet has 27 letters (26 Latin + ñ).
• A handful of monosyllabic words lost their accents: guion, vio, dio, fue, truhan.
• The reform is recommendation, not law — both old and new forms remain widely visible in print.