In Italian, adjectives (aggettivi) are words that describe people, animals, places, or things. They tell us what someone or something is like, using qualities such as grande (big) or piccolo (small). Unlike English adjectives, which usually stay the same, Italian adjectives often change their endings to agree with the noun they describe. This means that the adjective must match the noun in gender (masculine or feminine) and number (singular or plural). Another important difference is that Italian adjectives usually come after the noun, although some common adjectives can also appear before it.
Gender and Number Agreement
Many Italian adjectives have four different forms. Adjectives ending in -o in the masculine singular usually change to -a in the feminine singular, -i in the masculine plural, and -e in the feminine plural. For example, alto (tall) becomes alta, alti, or alte, depending on the noun. The same pattern applies to common adjectives such as piccolo, nuovo, and bello. When an adjective describes a noun, both words must agree, even when the adjective comes after the verb essere (to be).
il ragazzo alto — the tall boy
la ragazza alta — the tall girl
i ragazzi alti — the tall boys
le ragazze alte — the tall girls
La ragazza è alta. — The girl is tall.
Another common group consists of adjectives ending in -e in the singular. These adjectives have the same form for masculine and feminine nouns, but they change to -i in the plural. For example, grande (big) can describe both un ragazzo and una ragazza, while grandi is used with both masculine and feminine plural nouns. The same rule applies to adjectives such as interessante (interesting) and importante (important).
un libro interessante — an interesting book
una storia interessante — an interesting story
due libri interessanti — two interesting books
due storie interessanti — two interesting stories
Position of Adjectives
In Italian, most descriptive adjectives come after the noun, especially when they describe qualities such as color, nationality, shape, or physical characteristics. This is different from English, where adjectives normally come before nouns. For example, English says a red car, while Italian says una macchina rossa. The position of the adjective does not change the rule of agreement: it must still match the noun in gender and number.
una macchina rossa — a red car
un ragazzo italiano — an Italian boy
una casa grande — a big house
However, some common adjectives, including bello (beautiful), buono (good), piccolo (small), and grande (big), often appear before the noun. At the A1 level, it is useful to recognize these common combinations without trying to learn every possible difference in meaning or every special form.
una bella casa — a beautiful house
una buona idea — a good idea
un piccolo giardino — a small garden
Summary of Italian Adjective Agreement
| Adjective type | Masculine singular | Feminine singular | Masculine plural | Feminine plural |
| Ending in -o | ragazzo alto | ragazza alta | ragazzi alti | ragazze alte |
| Ending in -e | libro interessante | storia interessante | libri interessanti | storie interessanti |