Native English speakers may sometimes have difficulty deciding where to place a Spanish adjective. The position of qualifying adjectives in Spanish is opposite to English. It is generally after the noun, especially:
1. Those denoting physical qualities, such as:
el pelo lacio - straight hair
la tez blanca - white skin
la nariz puntiaguda - snub-nose
ensalada verde - green salad
2. Those denoting nationality, such as:
bandera mexicana - Mexican flag
futbol americano - American football
3. Those derived from verbs, such as:
préstamo cerrado - closed loan
Position of Adjectives
Depending on the type of adjective and the context, it may occur either before or after the noun it modifies. Most frequently, adjectives follow the noun unless they are limiting adjectives or used metaphorically or modify a noun which is one-unique.
Limiting adjectives (adjetivos determinativos) are normally placed in front of the noun. These include adjectives which indicate quantity [e.g., mucho(s), poco(s), cuanto(s), todo(s), dos, etc.], articles (el, la, un, una, etc.), unstressed possessives (mi, tu, su, etc.), demonstratives (este, ese, aquel, etc.), and moral qualifiers (buen, mal, etc. if not preceded by adverbial modifiers such as muy) and particularly the comparative/ superlative forms such as mejor, peor):
Pocos mexicanos han leído mis libros.
Few Mexicans have read my books.
Estos regalos son para los mejores niños.
These gifts are for the best children.
Todas las chicas son alumnas muy buenas.
All the girls are very good students.
Descriptive adjectives (adjetivos calificativos). Adjectives which describe nouns —giving characteristics, for example color and size— normally are placed after the noun.
¿Puedes prestarme tu falda roja?
Can you loan me your red skirt?
El chico alto es mi sobrino.
The tall boy is my nephew.
Los estudiantes brillantes salieron bien en los exámenes.
The brilliant students did well on the tests. (The others didn't do so well.)
It's important to realize that the final (or last or post-) position in Spanish is generally the position reserved for the element which is the most stressed or most important or most distinctive; when an adjective occurs in the post-position it has the effect of distinguishing the noun involved from other such nouns. In the the last sentence given above the phrase estudiantes brillantes occurs, with brillantes in the post-position. This implies a contrast with other estudiantes which are not brillantes (and the sentence then implies that the not-so-brilliant students did not do so well on the test). In contrast, if we wish to indicate that ALL the students were brilliant (and hence all did well on the test), or if we want to characterize the entire group as being brilliant, we would place the adjective before the noun:
Los brillantes estudiantes salieron bien en los exámenes.
The brilliant students did well on the tests. [That is, (all) the students —all of whom were brilliant— did well.]
Note that when a given noun is unique or one-of-a-kind, the post-position in normally required for adjectives:
Mi esposa hermosa
My beautiful wife: I have more than one wife; I'm referring to the one who is beautiful.
Mi hermosa esposa
My beautiful wife: I only have one wife, and she is beautiful.
Several descriptive adjectives change their meaning depending on whether they are used before or after the noun:
antiguo former, ex- ancient, old
gran, grande great big, large
medio half (a) average
nuevo new, different (brand) new
pobre poor, unfortunate poor, penniless
puro pure (just, merely, all) pure (clean, uncontaminated)
viejo old, long-standing old (in age), elderly
único only unique
mi antiguo maestro - my former teacher
mi maestro antiguo - my ancient teacher
un gran presidente - a great president
un president grande - a big president (large man)
media botella - half a bottle
una botella media - an average bottle
mi nueva casa - my new house [we just moved into an old house, but it's new or different for us]
mi casa nueva - my brand-new house
una pobre mujer - an poor (unfortunate) woman
una mujer pobre - a poor (penniless) woman
pura leche - mere (or just) milk [for example, not alcohol]
leche pura - pure ( or uncontaminated) milk
un viejo amigo - an old (long-standing) friend
un amigo viejo - an old (elderly) friend
el único ejemplo - the only example
un ejemplo único - a unique example