Indefinite Articles in Italian

In Brief

Italian uses four forms for English a/an: un and uno with masculine nouns, and una and un' with feminine nouns. The choice depends on the noun's grammatical gender and opening sound: un libro, uno studente, una casa, un'amica. Only feminine un' has an apostrophe; write un amico, never un'amico.

Overview

An indefinite article introduces one person or thing without identifying a specific one: un caffè can mean “a coffee” or “one coffee,” rather than a particular coffee already known to the listener. An article is a small word placed before a noun (a word for a person, place, thing, or idea). Italian articles agree with the noun's grammatical gender, its masculine or feminine word class.

This is an A1 topic, but it matters in almost every conversation. You need these forms to order una pizza, look for un albergo, describe uno studente, or mention un'amica. Unlike English, which chooses a or an mainly according to the next sound, Italian first asks whether the noun is masculine or feminine and then considers how it begins.

The beginner rule is compact: learn the noun together with its article, not as an isolated word. Instead of memorizing only stazione, learn una stazione; instead of only zaino, learn uno zaino. This makes both gender and article choice easier to recall.

How It Works

The four forms

Gender	Beginning of noun	Article	Example	Meaning
Masculine	Most consonants	un	un libro	a book
Masculine	Vowel	un	un amico	a male friend
Masculine	Special consonant groups	uno	uno studente	a student
Feminine	Consonant	una	una casa	a house
Feminine	Vowel	un'	un'amica	a female friend

The noun controls the choice. An adjective after the noun does not change the article pattern: un libro interessante, uno studente italiano, un'amica simpatica.

Masculine nouns: un

Use un before a masculine noun beginning with a vowel or with an ordinary single consonant or consonant group:

• un amico — a male friend
• un uomo — a man
• un cane — a dog
• un fiore — a flower
• un treno — a train
• un problema — a problem

A noun's ending often gives a useful clue to gender, but it is not a guarantee. Many nouns ending in -o are masculine, and many ending in -a are feminine, yet problema is masculine: un problema. Gender must be learned with the noun.

English speakers often expect an apostrophe in un amico because the final sound of un seems shortened. Historically and grammatically, however, masculine un is a complete form, not an elision of uno in modern spelling. It therefore has no apostrophe.

Masculine nouns: uno

Use uno before masculine nouns that begin with sounds that are awkward after un. The main patterns are:

Beginning	Example	English
s + consonant	uno studente, uno sport	a student, a sport
z	uno zaino, uno zio	a backpack, an uncle
gn	uno gnomo	a gnome
ps	uno psicologo	a psychologist
pn	uno pneumatico	a tire
x	uno xilofono	a xylophone
consonant-like y in loanwords	uno yogurt	a yogurt

The most useful beginner patterns are s + consonant and z, because they occur often. Notice the difference between un signore and uno studente: signore begins with s + vowel, while studente begins with s + consonant.

These are essentially the same sound patterns that select the definite article lo: lo studente → uno studente, lo zaino → uno zaino. By contrast, il libro corresponds to un libro.

Feminine nouns: una and un'

Use una before a feminine noun beginning with a consonant:

• una donna — a woman
• una scuola — a school
• una zia — an aunt
• una psicologa — a psychologist

There is no feminine equivalent of uno. Even before s + consonant, z, or ps, the form stays una: una studentessa, una zona, una psicologa.

Before a vowel, una normally loses its final a. This is called elision (dropping a final vowel before another vowel), and the missing letter is marked with an apostrophe:

• una amica → un'amica
• una isola → un'isola
• una ora → un'ora
• una esperienza → un'esperienza

The apostrophe is part of the written form. Do not leave a space after it: un'amica, not un' amica.

Look at the noun, not its English translation

Italian article choice follows the Italian noun's gender and opening sound. English meaning does not determine it:

• un fiore — a flower (masculine in Italian)
• una notte — a night (feminine in Italian)
• un problema — a problem (masculine despite -a)
• una mano — a hand (feminine despite -o)

If an adjective comes before the noun, the article is selected according to the sound immediately following it, while gender still comes from the noun phrase: un bravo studente but uno studente bravo; una bella amica but un'amica bella. At A1, it is enough to master the article directly before the noun; adjective placement can be added later.

Singular and plural

Un, uno, una, and un' are singular. Italian has no direct plural form of the indefinite article. Depending on meaning, a plural indefinite noun may use a partitive article—dei, degli, or delle, often corresponding to “some”—or no article at all:

Singular	Possible plural	English
un libro	dei libri	a book → some books
uno studente	degli studenti	a student → some students
un'amica	delle amiche	a female friend → some female friends

This is related to indefinite articles, but it is a separate system. Do not invent forms such as uni libri as the normal plural of un libro.

Examples in Context

Italian	English	Note
Vorrei un caffè, per favore.	I would like a coffee, please.	Masculine, ordinary consonant
Cerchiamo un albergo in centro.	We are looking for a hotel downtown.	Masculine before a vowel; no apostrophe
Marco è un amico di Paolo.	Marco is a friend of Paolo's.	Masculine before a vowel
Ho comprato un libro italiano.	I bought an Italian book.	The adjective follows the noun
Luca è uno studente di medicina.	Luca is a medical student.	Masculine, s + consonant
Mi serve uno zaino nuovo.	I need a new backpack.	Masculine before z
Ho parlato con uno psicologo.	I spoke with a psychologist.	Masculine before ps
Prendiamo uno yogurt a colazione.	We have a yogurt for breakfast.	Consonant-like initial y
Anna abita in una casa piccola.	Anna lives in a small house.	Feminine before a consonant
Marta è una studentessa americana.	Marta is an American student.	Feminine stays una before s + consonant
Aspetto un'amica alla stazione.	I am waiting for a female friend at the station.	Feminine before a vowel
È un'idea interessante.	It is an interesting idea.	Feminine elision before i
Ci vediamo tra un'ora.	See you in an hour.	Feminine elision; ora is feminine
Abbiamo un problema urgente.	We have an urgent problem.	Problema is masculine
Mi dai una mano?	Can you give me a hand?	Mano is feminine

Common Mistakes

Adding an apostrophe to masculine un

• Wrong: un'amico, un'uomo
• Right: un amico, un uomo
• Why: Masculine un is written without an apostrophe, including before a vowel. The apostrophe belongs to feminine un', as in un'amica.

Using un before s + consonant or z

• Wrong: un studente, un zaino
• Right: uno studente, uno zaino
• Why: Masculine nouns beginning with s + consonant or z take uno. These are the two high-frequency patterns worth learning first.

Using uno for every masculine noun before a vowel

• Wrong: uno amico, uno elefante
• Right: un amico, un elefante
• Why: A masculine noun before a vowel takes un, not uno. Italian does not copy the English a/an division.

Applying the masculine special pattern to feminine nouns

• Wrong: uno studentessa, un zia
• Right: una studentessa, una zia
• Why: Uno is masculine only. Feminine nouns use una before every consonant, including s + consonant and z.

Guessing gender only from the final letter

• Wrong: una problema, un mano
• Right: un problema, una mano
• Why: Endings are clues, not rules without exceptions. Learn problema as masculine and mano as feminine, ideally together with an article.

Using a singular article with a plural noun

• Wrong: un libri, una amiche
• Right: dei libri, delle amiche, or simply libri, amiche when the context allows
• Why: The four indefinite articles are singular. Plural indefinite meaning uses another construction.

Usage Notes

The article can mean either English “a/an” or the unstressed number “one”: Aspetta un minuto means “Wait a minute,” while Ho solo un minuto means “I have only one minute.” If the exact number is strongly contrasted, Italian may stress uno/una or use it independently: Ne voglio uno, non due (“I want one, not two”).

Italian and English do not always include an article in the same places. After essere, a profession or role used simply to classify someone often appears without an article: Giulia è medica (“Giulia is a doctor”). An article becomes natural when the noun is described or evaluated: Giulia è una medica molto esperta (“Giulia is a very experienced doctor”). Usage can vary with the profession, the sentence, and the speaker, so learn common expressions as complete phrases rather than deleting every article after essere.

In everyday speech, the vowel sequence in un amico may sound smoothly connected. Spelling does not change: a smooth pronunciation is not a reason to add an apostrophe. In careful writing, use the apostrophe character consistently in un'amica and similar feminine forms.

Beyond the Basics

You do not need to master these details at A1, but they explain forms you will meet later.

Partitive articles and zero article

Plural “some” is expressed according to meaning, not by mechanically pluralizing un. Compare Ho comprato dei pomodori (“I bought some tomatoes”) with Vendo libri usati (“I sell used books”). The first refers to an unspecified quantity; the second describes books as a general category in a compact expression. The choice between a partitive article and no article deserves separate study.

Article choice when another word intervenes

The special uno pattern concerns the sound immediately after the article. That is why Italian says uno studente but un bravo studente: un now stands before bravo. Similarly, un'amica becomes una cara amica when cara comes between article and noun. Gender remains fixed, but elision and sound-based form depend on the adjacent word.

This also helps explain pairs such as:

• uno spettacolo interessante — an interesting show
• un grande spettacolo — a great show
• un'attrice famosa — a famous actress
• una famosa attrice — a famous actress

Related shortened forms

Words such as nessun/nessuno/nessuna (“no, not any”) and ciascun/ciascuno/ciascuna (“each”) show patterns similar to un/uno/una: nessun libro, nessuno studente, nessuna casa. They are not indefinite articles, but recognizing the familiar sound pattern makes them easier to learn.

Stylistic and lexical variation

A few words beginning with i or a foreign letter can create uncertainty because pronunciation determines whether the opening behaves like a vowel or a consonant. Established standard forms should be learned from reliable dictionaries and current usage. Common loanwords such as yogurt normally take uno because the initial sound is consonant-like: uno yogurt. For a beginner, this is a vocabulary issue rather than a new general rule.

Practice Tips

1. Learn article and noun as one unit. Make cards with un problema, una mano, uno zaino, and un'idea, not with the bare nouns alone. This records gender and opening-sound behavior at the same time.
2. Sort new nouns into four columns. Label them un, uno, una, and un'. Say each phrase aloud; the contrast between un signore and uno studente is especially useful.
3. Use a two-question check. First ask “masculine or feminine?” Then ask “what sound comes immediately after the article?” This prevents you from choosing solely by the English translation or by the noun's last letter.

Related Concepts

• Prerequisite: Gender of Nouns — article choice begins with knowing whether an Italian noun is masculine or feminine.