Gli aggettivi β posizione e accordo
An Italian adjective does two things at once: it AGREES with its noun (in gender and number), and it sits in a chosen POSITION (usually after the noun, sometimes before). Un libro interessante = an interesting book β adjective after the noun (the default). Una bella casa = a beautiful house β short common adjective before the noun. We've been using simple agreement since lesson 4 (italiano / italiana); today we systematize it and add the placement rules.
Agreement β the four endings
Most adjectives end in -o in the dictionary form. They have four endings, just like nouns. rosso (red): masculine sg rosso, feminine sg rossa, masculine pl rossi, feminine pl rosse. un libro rosso, una macchina rossa, i libri rossi, le macchine rosse. Adjectives ending in -e (like grande, interessante, felice) have only TWO forms: -e in the singular (both genders), -i in the plural. un libro interessante, una storia interessante, i libri interessanti, le storie interessanti. Memorize: -o adjectives have 4 endings, -e adjectives have 2.
Default placement: AFTER the noun
In Italian, the descriptive adjective normally FOLLOWS the noun: un libro interessante, una macchina rossa, una giornata lunga, un ragazzo italiano. This is the opposite of English. Adjectives of nationality, color, shape, and most descriptive qualities all go after: vino italiano, gatto nero, tavolo grande. When in doubt, put the adjective after the noun β that's right ~80% of the time.
Common short adjectives that go BEFORE
A small group of high-frequency adjectives usually goes BEFORE the noun: bello (beautiful), buono (good), bravo (good at), grande (big), piccolo (small), vecchio (old), giovane (young), nuovo (new), stesso (same), caro (dear), brutto (ugly). Una bella casa, un buon caffΓ¨, un piccolo paese, un vecchio amico. These adjectives describe a basic, expected, or subjective quality β placement before the noun feels neutral. Putting them AFTER is grammatical but adds emphasis or contrast: una casa bella stresses the beauty itself.
BELLO β chameleon adjective before the noun
bello before a noun changes shape just like the definite article (il / lo / la / i / gli / le, lesson 4). Match the article that the noun would take, then attach bell- to it. il libro β un bel libro (m sg). lo studente β un bello studente (before s+consonant or z). i libri β dei bei libri (m pl). gli amici β dei begli amici. la casa β una bella casa (f sg). le case β delle belle case (f pl). After the noun, bello behaves regularly: un libro bello. Same trick applies to buono in the singular: un buon libro, una buona idea (drops the -o before m sg).
Position can change meaning
A few of these adjectives shift meaning by position. un grande uomo = a great man (extraordinary). un uomo grande = a big/tall man (physical). un vecchio amico = an old friend (long-time). un amico vecchio = an elderly friend (in age). una povera donna = a poor (unfortunate) woman. una donna povera = a poor (no money) woman. Don't memorize a list β just notice that BEFORE the noun = figurative, AFTER the noun = literal. With other adjectives, position is mostly stylistic.
