The absolute superlative with -ísimo expresses a quality at its maximum degree, without comparing with other elements. Rápido becomes rapidísimo and fácil becomes facilísimo. The form is attached to the adjective and creates an idea of very high intensity: una sopa calientísima, un examen dificilísimo, unas calles limpísimas. When you use this form, you do not say that something is more than another thing; you say that it possesses that quality to the maximum. To see the difference with other classes of adjectives, it is useful to review Adjetivos Descriptivos.

Basic rule of the absolute superlative

Idea
You use -ísimo to express a quality at the maximum degree.
The absolute superlative usually sounds more intense than very + adjective.
This superlative is used to praise or exaggerate with a lot of emphasis.
It also appears in plural when the noun is plural.

Ísimo changes to agree with the noun it accompanies. If the noun is masculine singular, you use -ísimo; if feminine singular, -ísima; if masculine plural, -ísimos; and if feminine plural, -ísimas. That’s why you say un barrio tranquísimo, una calle tranquilísima, unos barrios tranquilísimos and unas calles tranquilísimas. The concordance follows the same logic as in Concordancia Adjectival, because the adjective must match the noun it modifies. It also works with adjectives that already change form in masculine and feminine, like altísima or altísimos. When the adjective ends in a consonant, the ending is added on the appropriate base: fiel → fidelísimo, joven → jovencísimo.

Agreement of the absolute superlative

Idea
The ending changes according to the gender of the noun.
The ending changes according to the number of the noun.
The masculine singular usually ends in ísimo.
The feminine plural usually ends in ísimas.

When forming -ísmo, some adjectives change their spelling to preserve the correct sound. Those ending in -co usually shift to -quísimo: rico → riquísimo, poco → poquísimo. Those ending in -go usually shift to -guísimo: largo → larguísimo, amigo does not follow this pattern because it is not a degree adjective commonly used with this form. If the adjective ends in -z, it typically changes to -císimo: feliz → felicísimo, capaz → capacísimo. There are also changes in adjectives with irregular roots, such as fuerte → fortísimo and antiguo → antiquísimo. These forms are learned as part of the normal use of the adjective, just like other variations seen in Adjetivos Descriptivos.

Spelling adjustments before adding ísimo

Idea
The letter c changes to qu before ísimo in some adjectives.
The letter g changes to gu before ísimo when necessary to preserve the sound.
The letter z changes to c before ísimo in certain cases.
In some adjectives the base remains and only ísimo is added.

The pattern very + adjective also expresses a high degree of a quality, but it does not form a single new word. You say very expensive, very clean, very interesting. This construction sounds natural when you want to intensify without using the -ísimo ending. In everyday speech it is usually preferred with long adjectives or with a more neutral intonation: very important, very necessary, very elegant. Compared with -ísimo, very + adjective is less emphatic and more flexible. If you already know the normal position of the adjective, as in Adjetivos Descriptivos, this structure only adds intensity in front of the adjective.

When to use very with adjectives

Usage	Explanation
Neutral emphasis	Use very when you want to intensify without sounding as emphatic as ísimo.
More natural style	Sometimes very sounds more natural in everyday conversation.
Avoid excessive intensity	Prefer very when íssimo might seem too expressive.
Simple description	Use very if you only want to reinforce the quality simply.

The structure el + adjective + más indicates that a person or thing stands out within a group: la casa más grande, el alumno más trabajador, los días más largos. The group is understood by context or is added with de plus a noun or a plural: la ciudad más bonita de España, el coche más rápido del aparcamiento. The adjective agrees with the noun in gender and number, while más does not change. This form compares one with others and places the trait above the rest, something that connects directly with Adjetivos Comparativos.

Use of más with group comparison

Usage	Explanation
Maximum within a group	Use the most to indicate who or what stands out for a quality within a group.
Comparison among several	The structure the most is used when comparing several elements at once.
Concrete reference	A group is added to make the comparison point clear.
Notable quality	The formula the most marks a single person or thing with the highest quality.

The structure el + adjetivo + menos indicates that something has the quality at the lowest degree within a group: la película menos interesante, el camino menos corto, las opciones menos caras. Just like the superiority superlative, the adjective agrees with the noun and menos remains invariable. The group being compared can appear afterwards with de: el estudiante menos puntual de la clase, la calle menos transitada del centro. The idea is not total absence of the quality, but a lower level compared to the other elements of the set.

Use of menos with group comparison

Usage	Explanation
Minimum within a group	Use the least to indicate the lowest quality within a set.
Female variant	The form la menos agrees with feminine nouns.
Masculine plural	The form los menos is used with masculine plural groups.
Feminine plural	The form las menos is used with feminine plural groups.

De introduces the group with which the comparison is established in many relative superlatives. After el más, la más, los más or las más, de is added when the group appears as a clear noun: la más fuerte de todas, el más alto de la clase, las menos útiles del equipo. It is also used with proper names or places: la ciudad más antigua de Europa, el río más largo de España. When the group is already clear from context, it can be omitted. If you compare within a set mentioned before, the sentence remains complete without repeating it. To distinguish these uses from other relationships of the adjective, it helps to return to Adjetivos Descriptivos and to Adjetivos Comparativos.

Group of comparison with de

Idea
Use de to present the group you compare with.
The comparison group usually comes after the relative superlative.
With collective nouns, de avoids repeating information.
The preposition de helps close the comparison clearly.

Some adjectives use superlatives inherited from Latin or special forms of frequent use. Bueno has buenísimo and also óptimo in more formal registers. Malo can give malísimo, and in certain contexts pésimo appears. Grande forms grandísimo, although enorme or máximo can express intensity or extreme value in specific contexts. Pequeño is usually said pequeñísimo, but mínimo is very common when talking about quantity or reduced size. These forms do not all follow the same pattern, so it is helpful to recognize them as common superlatives of vocabulary. When the adjective has a special form, that form is used just like any other adjective and keeps the concordance seen in Concordancia Adjectival.

supremodificilísimomínimoínfimomáximobellísimopésimoagradabilísimoóptimograndísimo

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Significa muy bello y se usa para elogiar con fuerzaSignifica muy malo y se usa para valorar algo con fuerza negativaSignifica el más pequeño o el más bajo en cantidad o nivelSignifica el más alto o el mayor dentro de un límiteSignifica muy agradable y suele usarse para experiencias placenterasSignifica superior a todo lo demás en una escala muy elevadaSignifica muy pequeño o muy bajo y suele sonar formalSignifica muy grande y funciona como intensificación enfáticaSignifica muy difícil y expresa intensidad altaSignifica excelente o el mejor posible en un contexto formal

Specially frequent superlatives

Word	Definition
óptimo	Means excellent or the best possible in a formal context.
pésimo	Means very bad and is used to rate something with strong negative connotation.
mínimo	Means the smallest or the lowest in amount or level.
máximo	Means the highest or the greatest within a limit.
supremo	Means superior to everything else on a very high scale.
ínfimo	Means very small or very low and tends to sound formal.
grandísimo	Means very large and functions as emphatic intensification.
bellísimo	Means very beautiful and is used to praise strongly.
dificilísimo	Means very difficult and expresses high intensity.
agradabilísimo	Means very pleasant and is often used for enjoyable experiences.

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