Comparatives express a relationship between two quantities, qualities, or actions and show whether something surpasses, equals, or falls short of another thing. They are formed with adjectives, adverbs, nouns, and verbs, depending on the element being compared, and their function depends on the chosen structure. Mastery requires recognizing agreement, the position of the adjective, and the relationship with Adjectives, Adjective Agreement and Position of the Adjective.

The comparison of superiority uses 'more' with adjectives, adverbs, or certain complements to indicate that a quality is greater in one referent than in another. The adjective maintains gender and number agreement with the noun it describes, but the comparative marker does not change. When a numeral appears, the comparison is expressed as 'more than' to signal a quantity greater than a limit.

IdeaIdea	EjemploExample
La superioridad se expresa con más más alto en la comparación con otro referente.The superiority is expressed with 'more' to indicate that a quality is greater in one referent than in another.	Ana es más alta que Luis.Ana is taller than Luis.
La cantidad superior a una cifra se expresa con más de.The quantity above a figure is expressed with 'more than'.	Hay más de cien libros en la mesa.There are more than one hundred books on the table.
La forma comparativa acompaña al adjetivo sin alterar su concordancia.The comparative form accompanies the adjective without altering its agreement.	Las flores son más bonitas que antes.The flowers are prettier than before.

Inferiority comparison uses 'less' with adjectives, adverbs, or quantities to indicate a quality lower than another element. This structure is parallel to superiority and preserves the adjective's agreement with the noun it modifies. With numbers, 'less than' indicates a quantity below a concrete number.

IdeaIdea	EjemploExample
La inferioridad se expresa con menos menos caro en la comparación.Inferiority is expressed with less with adjectives, adverbs, or quantities to indicate a quality lower than another element.	Ese bolso es menos caro que este.That bag is less expensive than this.
La cantidad inferior a una cifra se expresa con menos de.With numbers, 'less than' indicates a quantity below a concrete number.	Quedan menos de veinte velas.There are fewer than twenty candles left.
El adjetivo sigue concordando con el sustantivo comparado.The adjective continues to agree with the noun being compared.	Estas manzanas son menos rojas que aquellas.These apples are less red than those.

The equality comparison uses 'tan' with adjectives and adverbs to indicate that two referents share the same degree. With nouns, 'tanto', 'tanta', 'tantos' or 'tantas' are used according to gender and number, and with verbs it is expressed with 'tanto como'. The difference between 'tan' and 'tanto' is essential: 'tan' accompanies qualities and modes of action, while 'tanto' accompanies nouns and verbs.

IdeaIdea	EjemploExample
La igualdad con adjetivos y adverbios usa tan tan rápido como.Equality with adjectives and adverbs uses 'tan' with 'as... as'.	Corre tan rápido como ella.She runs as fast as she does.
La igualdad con sustantivos usa tanto tanta paciencia como.Equality with nouns uses 'tanto', 'tanta', 'tantos' or 'tantas' as appropriate.	Tiene tanta paciencia como tú.He has as much patience as you.
La igualdad con verbos usa verbo más tanto como.Equality with verbs uses 'tanto como'.	Trabaja tanto como su hermana.He works as much as his sister.

Some comparatives are not formed with more or less, but with special forms inherited from general usage. Bueno becomes mejor, malo becomes peor, grande becomes mayor, and pequeño becomes menor. In several regional contexts you hear 'más mayor' or 'más peor', but the standard literary usage prefers the irregular forms.

IdeaIdea	EjemploExample
Bueno cambia a mejor.Bueno changes to mejor.	Este vino es mejor que el anterior.This wine is better than the previous one.
Malo cambia a peor.Malo changes to peor.	La situación es peor hoy.The situation is worse today.
Grande cambia a mayor y pequeño cambia a menor.Grande changes to mayor and pequeño changes to menor.	Mi hermano mayor tiene un cuarto menor.My older brother has a smaller room.

When the comparative accompanies a noun, the adjective preserves gender and number agreement with that noun. The comparative form does not substitute the normal inflection of the adjective, but accompanies it. This relationship is the same as studied in Descriptive Adjectives and Adjective Agreement.

IdeaIdea	EjemploExample
El adjetivo masculino singular concuerda con un sustantivo masculino singular.The masculine singular adjective agrees with a masculine singular noun.	El coche es más rápido que el tren.The car is faster than the train.
El adjetivo femenino singular concuerda con un sustantivo femenino singular.The feminine singular adjective agrees with a feminine singular noun.	La casa es más grande que la otra.The house is bigger than the other one.
El adjetivo plural concuerda con un sustantivo plural.The plural adjective agrees with a plural noun.	Las sillas son menos cómodas que ayer.The chairs are less comfortable than yesterday.

The comparative adjective normally appears after the noun in Spanish, as with most descriptive adjectives. In some stylistic uses the position may vary, but the most common order maintains the clarity of the comparative contrast. This guideline is best understood together with Position of the Adjective.

IdeaIdea	EjemploExample
La posición neutra coloca el adjetivo después del sustantivo.The neutral position places the adjective after the noun.	Un libro más interesante atrae más atención.A more interesting book attracts more attention.
La posición estilística puede anticipar el adjetivo en contextos expresivos.The stylistic position can place the adjective before the noun in expressive contexts.	Más serena quedó la escena.The scene turned out calmer.
La estructura comparativa conserva su sentido aunque cambie el orden.The comparative structure retains its meaning even if the order changes.	La tarde fue más tranquila que la mañana.The afternoon was calmer than the morning.

In addition to the basic comparatives, Spanish uses 'igual de' with adjectives to express equivalence and phrases like 'cada vez más' to indicate progressive increase. These forms expand the comparative system and are especially useful when you want to mark an equivalent degree or a rising trend. They are also related to Numeral Adjectives when the comparison involves exact quantities.

IdeaIdea	EjemploExample
Igual de se usa para equivalencia con adjetivos.'Igual de' is used for equivalence with adjectives.	Es igual de claro que el primero.It's as clear as the first.
Cada vez más expresa aumento progresivo.'Cada vez más' expresses progressive increase.	El proyecto es cada vez más complejo.The project is increasingly complex.
Las comparaciones pueden combinar grado y cantidad según el contexto.Comparisons can combine degree and quantity depending on context.	Hay cada vez más estudiantes en clase.There are more and more students in class.

Comparatives organize the degree of a quality, a quantity, or an action through superiority, inferiority, and equality. Correct usage depends on choosing between more, less, tan, tanto, and the irregular forms, in addition to respecting the agreement and the position of the adjective. When these patterns are recognized together, Spanish comparison becomes precise, natural, and flexible.