Introduction
This article explains how um, uma, uns, and umas work in Brazilian Portuguese for complete beginners. You will learn when to use each form, how they match nouns by gender and number, common phrases, useful vocabulary, simple example sentences, and practical tips to avoid mistakes in everyday situations.
- What are um, uma, uns, and umas?
- How to choose um or uma
- When to use uns and umas
- Common everyday examples
- Important grammar notes for beginners
- Common beginner mistakes and how to avoid them
- Practice exercises for beginners
- Quick reference table (text)
- Useful vocabulary and short phrases to memorize
- When articles can be omitted
- Conclusion
What are um, uma, uns, and umas?
In Brazilian Portuguese these four words are indefinite articles. They are similar to the English words a, an, and some. They tell the listener that we are talking about a non-specific thing or person. The correct form depends on the gender and number of the noun that follows.
Gender and number basics
Portuguese nouns are masculine or feminine. They can also be singular or plural. The indefinite articles must agree with the noun.
Masculine singular: um
Feminine singular: uma
Masculine plural: uns (used to mean some, or a few)
Feminine plural: umas (used to mean some, or a few)
How to choose um or uma
When you talk about one non-specific object or person, use um for masculine nouns and uma for feminine nouns.
Examples:
um livro — a book (masculine singular)
Eu comprei um livro.
uma caneta — a pen (feminine singular)
Você tem uma caneta?
To decide the gender, look at the noun ending or learn the article with the noun. Many nouns that end in -o are masculine (o livro), and many that end in -a are feminine (a mesa). But there are exceptions, so memorize both the noun and its article when possible.
Useful beginner tip
When you learn a new noun, always add um or uma in your notes. For example write um copo, uma cadeira. This builds gender awareness from the start.
When to use uns and umas
Use uns and umas when you mean some, a few, or several. These plural forms match the gender of the nouns they modify.
Examples:
uns amigos — some friends (masculine plural)
Eu tenho uns amigos na cidade.
umas frutas — some fruits (feminine plural)
Comprei umas frutas no mercado.
Note that uns and umas imply an unspecified small quantity. If you want to say many, use muitos or muitas instead of uns/umas.
Differences from English some
English some covers both singular unspecified and plural uses in speech like I need some information. In Portuguese you must choose um/uma for one and uns/umas for plural. For uncountable nouns like água (water) Portuguese often uses definite or partitive constructions instead of uns/umas. For example, quero água or preciso de água, not umas água.
Common everyday examples
Short, realistic phrases beginners will see in shops, messages, and conversations.
In a café: Quero um café, por favor. — I want a coffee, please.
At a store: Você tem uma sacola? — Do you have a bag?
Making plans: Vamos a uns shows neste fim de semana? — Shall we go to some shows this weekend?
Grocery list: Comprei umas maçãs e um pão. — I bought some apples and a loaf of bread.
Form or sign: Preencha uma ficha. — Fill out a form.
Examples with numbers and quantity words
Use um/uma when the quantity is exactly one: Eu preciso de um bilhete. — I need one ticket.
Use uns/umas for a few: Trouxe umas cinco fotos. — I brought about five photos (colloquial use; more natural: trouxe cinco fotos).
When you give an exact number, you do not use um/uma to mean some: Eu tenho três livros, not Eu tenho uns três livros unless you mean roughly three.
Important grammar notes for beginners
Position: The article comes before the noun, and any adjectives usually follow the noun. Example: um carro novo — a new car.
Agreement with adjectives: Adjectives must agree with gender and number. Example: uma casa grande, uns carros velhos, umas bicicletas rápidas.
Negative sentences: Use nenhum/nenhuma for none instead of um/uma. Example: Não tenho nenhum amigo aqui. — I don’t have any friend here.
Short example dialog
Maria: Você viu um filme bom?
João: Vi umas comédias na TV ontem.
Maria: Me indica uma, por favor?
Translation in English: Maria: Did you see a good movie? João: I watched some comedies on TV yesterday. Maria: Can you recommend one, please?
Common beginner mistakes and how to avoid them
Mistake 1: Using um/uma for plural. Incorrect: Eu tenho uma amigos. Correct: Eu tenho uns amigos or Eu tenho amigos.
Tip: If the noun is plural, choose uns or umas, or drop the article entirely when speaking in general terms.
Mistake 2: Forgetting gender. Incorrect: Eu quero um água. Correct: Eu quero água or Eu quero uma água when referring to a bottled water colloquially.
Tip: Learn frequent nouns with their articles. Make flashcards that include um/uma plus the noun.
Mistake 3: Using uns/umas with uncountable nouns. Incorrect: Preciso de umas informação. Correct: Preciso de informação or Preciso de algumas informações.
Tip: Use algumas + plural of information (informações) for countable contexts, or no article for general uncountables.
Practice exercises for beginners
Fill in the blanks with um, uma, uns, or umas.
1. Eu comprei ___ livro novo.
2. Você tem ___ irmão?
3. Na feira havia ___ verduras frescas.
4. Preciso de ___ cadeira para a sala.
Answers: 1 um, 2 um, 3 umas, 4 uma.
Role-play suggestions
Use short role-plays to internalize article use. Example scenario: At a bakery. One student asks for items using um/uma/uns/umas and the other replies with prices and confirmations.
Example lines: Quero um pão e umas bolachas. Quanto custa um pão? São três reais cada.
Quick reference table (text)
Singular masculine: um — example: um copo
Singular feminine: uma — example: uma janela
Plural masculine: uns — example: uns amigos
Plural feminine: umas — example: umas flores
Useful vocabulary and short phrases to memorize
um copo — a cup/glass
uma mesa — a table
uns livros — some books
umas fotos — some photos
um ingresso — a ticket
uma prova — a test
umas perguntas — some questions
Pronunciation tips
um sounds like oom or um depending on accent; say it quickly before the noun: um carro. uma is pronounced OO-ma. Uns and umas keep the initial u sound and the s pronounced as s: uns amigos, umas amigas.
When articles can be omitted
In Portuguese you sometimes omit the indefinite article when speaking in general statements or listing professions. Example: Sou estudante. — I am a student. But both Sou um estudante and Sou estudante are acceptable with subtle differences; beginners should listen to native usage and follow context.
On signs and menus articles are often omitted: Pizza de calabresa — Calabresa pizza, not uma pizza.
Conclusion
Mastering um, uma, uns, and umas is an essential step for beginners in Brazilian Portuguese. Remember to match gender and number, learn nouns with their articles, practice with realistic phrases, and pay attention to uncountable nouns and plural contexts. With targeted practice in everyday situations like cafés, stores, and messages, these articles will become natural quickly.
