Irregular comparatives (mejor, peor, mayor, menor)

Esto es mucho mejor de lo que esperaba.This is much better than I expected.

The comparative and superlative lessons already introduced mejor, peor, mayor and menor as the irregular forms of bueno, malo, grande and pequeño. This lesson builds on that foundation with what goes beyond a simple comparison between two things: comparing against a whole idea instead of a named thing, doubling the comparative for a "the more..., the more..." pattern, a handful of everyday fixed expressions built on these four words, and a separate set of absolute forms.

Quick shortcut: comparing against a clause is clearest with de lo que; cuanto más/menos... mejor/peor doubles the comparison; mayor/menor also show up in fixed phrases like la mayor parte and mayor de edad; and óptimo/pésimo/máximo/mínimo are a separate set of absolute forms, with only óptimo leaning formal.

Comparing against a clause: de lo que

Que compares against a noun or a pronoun (mejor que Pedro, "better than Pedro"). When the comparison is against a whole idea or clause rather than something named, Spanish typically uses de lo que instead:

Esto es mucho mejor de lo que esperaba. (This is much better than I expected.) El examen fue peor de lo que pensábamos. (The exam was worse than we thought.)

Es mejor de lo que pensaba is the clear, standard way to signal that a clause follows, not a noun. Dropping the lo (Es mejor que pensaba) is also heard in everyday speech and is understood the same way, but de lo que stays the safer, unambiguous choice — especially in writing.

Cuanto más / cuanto menos: the double comparative

Spanish pairs two comparatives to say that one thing increasing (or decreasing) causes another to change along with it — "the more..., the more..." / "the less..., the worse...":

Cuanto más practiques, mejor hablarás. (The more you practise, the better you'll speak.) Cuanto menos duermo, peor me siento. (The less I sleep, the worse I feel.)

When cuanto is followed directly by a noun rather than an adjective or verb, it agrees with it in gender and number: Cuantas más personas vengan, mejor. (The more people who come, the better.)

Everyday fixed expressions

Mayor and menor in particular show up in a handful of common set phrases worth learning as fixed units:

La mayor parte de los estudiantes aprobó el examen. (Most of the students passed the exam.) A lo mejor llego tarde. (I might be late.) A lo mejor is common in everyday speech but stays informal — quizás or tal vez are the safer choice in formal writing.

A separate set of absolute forms: óptimo, pésimo, máximo, mínimo

Alongside mejor/peor/mayor/menor, Spanish has a second, separate set of forms for the same four adjectives, built directly from Latin rather than from a regular comparative pattern:

These aren't simply fancier words for "better/worse/bigger/smaller" — each has settled into its own specific use. Máximo and mínimo are everyday, common words for a highest or lowest point or limit: La velocidad máxima es de 120 km/h. (The maximum speed is 120 km/h.) Pésimo is an ordinary, frequently used word in speech for "terrible, awful" — not a formal or technical term at all: La película fue pésima. (The movie was terrible.) Óptimo leans more formal or technical, describing something that meets the best possible standard under the circumstances, rather than just being "very good": Las condiciones son óptimas para el cultivo. (Conditions are optimal for growing crops.)

Common mistakes

• ❌ Más practiques, mejor hablarás. → ✅ Cuanto más practiques, mejor hablarás. (the pattern needs cuanto in front of the first más/menos — dropping it breaks the construction.)
• ❌ La comida está óptima. → ✅ La comida está buenísima / La comida está riquísima. (óptimo describes meeting a standard or specification, not how tasty a meal is — for praising food, the regular -ísimo form is the natural choice.)

Quick check

1. Complete: El concierto fue mucho mejor ___ ___ imaginaba.
2. Complete the double comparative: ___ más tiempo le dediques, ___ resultado tendrás.
3. What does a lo mejor mean, and is it formal or informal?
4. Which word is the everyday way to say "terrible," pésimo or óptimo?

Key takeaways

• Comparing against a whole idea, not a named thing, is clearest with de lo que — plain que is also heard colloquially, but de lo que is the safer choice, especially in writing.
• Cuanto más/menos... mejor/peor pairs two comparatives for "the more..., the more..." — cuanto agrees in gender/number only when a noun follows it directly.
• Mayor and menor appear in fixed expressions like la mayor parte, mayor/menor de edad and en el mejor/peor de los casos; a lo mejor ("maybe") stays informal.
• Óptimo/pésimo/máximo/mínimo are a separate set of absolute forms, not just fancier versions of mejor/peor/mayor/menor — máximo/mínimo are everyday words, pésimo is common in speech, and óptimo leans more formal/technical.