Plurals of stressed vowels (-es)

Plurals of Stressed Vowels (-í and -ú)

Usually in Spanish, you make a word plural by adding -s if it ends in a vowel, or -es if it ends in a consonant. However, there is a special rule for nouns and adjectives that end in a stressed -í or -ú: you add -es.

Notice that the written accent mark (the tilde) stays exactly where it is in the plural form.

Words Ending in Stressed "-í"

To make a word ending in -í plural, simply add -es. Let's look at the word for "ruby".

the ruby
el rubí
In the main pavilion, there are display cases full of rubies.
En el pabellón principal, hay vitrinas llenas de rubíes.

This rule is especially common for adjectives describing nationalities and demographics.

What surprised me was seeing the Israelis and the Iranians together.
Lo que me sorprendió fue ver a los israelíes y a los iraníes juntos.

Words Ending in Stressed "-ú"

The exact same pattern applies to words ending in a stressed -ú.

These mannequins show very beautiful Hindu dresses.
Estos maniquíes muestran vestidos hindúes muy bonitos.
The Israeli pavilion looks like several small igloos.
El pabellón israelí se parece a varios iglúes pequeños.
There are many bamboos near the display cases.
Hay muchos bambúes cerca de las vitrinas.