Indefinite articles are the Italian equivalent of 'a' or 'an' in English. They are used before singular nouns to refer to something non-specific — 'a book', 'a friend', 'an idea'. In Italian, the form of the indefinite article changes depending on the gender of the noun (masculine or feminine) and the first sound of the word that follows it.
| Article | Gender | Used before... |
|---|---|---|
| un | Masculine | most consonants and all vowels → un libro, un amico |
| uno | Masculine | z, s+consonant, gn, ps, pn, x, y → uno zaino, uno studente, uno gnomo |
| una | Feminine | consonants → una casa, una porta |
| un' | Feminine | vowels (a, e, i, o, u) → un'amica, un'isola, un'ora |
The article 'uno' is used before masculine nouns beginning with: z (uno zero, uno zoo), s followed by another consonant like st, sp, sc, sf, sn, sl, sm (uno studente, uno sport, uno specchio), gn (uno gnomo), ps (uno psicologo), pn (uno pneumatico), x (uno xilofono), y (uno yogurt — treated as a semivowel). This rule exists because these consonant clusters make it difficult to pronounce 'un' smoothly.
For masculine nouns: use 'un' before both consonants and vowels (un libro, un amico). For feminine nouns: use 'una' before consonants and 'un'' (with apostrophe) before vowels (una casa, un'amica). Note that 'un'' with an apostrophe is ONLY feminine — never use it for masculine nouns.
| Starts with... | Masculine | Feminine |
|---|---|---|
| regular consonant (b, c, d, f, g, l, m, n, p, r, t, v...) | un → un libro | una → una borsa |
| z | uno → uno zaino | una → una zebra |
| s + consonant (sp, st, sc, etc.) | uno → uno studente | una → una strada |
| gn, ps, pn, x, y | uno → uno gnomo | una → una gnosi (rare) |
| vowel (a, e, i, o, u) | un → un amico | un' → un'amica |
Unlike English, where 'some books' uses 'some', Italian indefinite articles (un, uno, una, un') have NO plural form. The plural is simply expressed without an article (some books = dei libri using partitive, or just libri). For A1 level, focus on mastering the singular forms first.
Think of 'uno' like the number 'uno' (one) — just as you say 'uno, due, tre' and not 'un, due, tre', the article 'uno' appears before those same tricky consonant clusters. If you would say 'uno' when counting before a word, use 'uno' as the article too!
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Basic: un vs una
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Uno before Z-words
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Uno before S+Consonant
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Uno before gn, ps, pn, x, y
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Un' before Feminine Nouns Starting with Vowels
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Articles with Food Vocabulary
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Articles with People and Professions
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Articles with Objects at Home
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Context Sentences 1
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Mixed Review: All Four Articles
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Articles with Transport Vocabulary
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Articles with School Objects
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Articles with Animals
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Articles with Body Parts
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Articles with Nature Vocabulary
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Articles with Clothing Vocabulary
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Articles with Food and Drinks
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Articles with Places
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Context Sentences 2
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Mixed Review 2: All Articles
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Un vs Uno: Tricky Cases
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Uno: Error Prevention
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Contrastive Pairs: un vs uno
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S+Vowel vs S+Consonant
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Gender First, Then Article
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Masculine Nouns Starting with Vowels: Always 'un'
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Spot the Correct Article: Common Mistakes
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All Four Forms Drill
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Context Sentences 3: Tricky Cases
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Group 3 Review: Distinguishing All Four Articles
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Advanced Vocabulary 1: Abstract Nouns
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Advanced Vocabulary 2: Science and Technology
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Advanced Vocabulary 3: Arts and Culture
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Advanced Vocabulary 4: Nature and Environment
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Advanced Vocabulary 5: Food and Gastronomy
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Advanced Vocabulary 6: People and Society
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Advanced Vocabulary 7: Buildings and Architecture
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Advanced Vocabulary 8: Sports and Activities
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Compound Expressions and Phrases
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Group 4 Review: Advanced Mixed
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Mastery: Articles in Sentences 1
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Mastery: Articles in Sentences 2
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Mastery: Less Common Vocabulary
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Mastery: Error Detection
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Mastery: Rapid Fire Mixed
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Mastery: Context-Heavy Sentences
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Mastery: Borrowed Words and Anglicisms
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Mastery: All Rules Challenge
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Mastery: Final Context Sentences
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Mastery: Final Challenge
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