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How to tell the gender of nouns in Brazilian Portuguese?

By: Fabiana Dametto Oliveira

The most reliable way to tell the gender of nouns in Brazilian Portuguese is to look at the article preceding the noun. In most cases, the ending of the noun will also give you a hint — nouns that end in -o are masculine and nouns that end in -a is feminine — but nouns can also have unexpected endings, so the article is the most reliable.

  • Masculine: o carro meaning the car

  • Feminine: a casa meaning the house

Why is knowing the gender of nouns important in Brazilian Portuguese? You will need to know a noun’s gender to use the appropriate forms of adjectives and other words to describe masculine versus feminine nouns. In this post, I will give you some tips on how to identify the gender of animate nouns, inanimate nouns, and some special cases. Let's explore each of them!

How to identify the gender of animate nouns in Brazilian Portuguese?

To identify the grammatical gender of an animate (living) noun, you can always look at the article that is used before it.

Most commonly, the ending will also help you:

  • -o, -ão, -s, -r for masculine

  • -a -ã, -sa, -ra for feminine

But sometimes different endings are used, so the article is the most reliable.

Usually, animate nouns take their grammatical gender from real-world sex or gender of the person or animal the noun represents. So if you know a person or animal’s gender, that will also help.

Let’s look at all of these cases below!

Using the ending to identify the gender of a noun

In Brazilian Portuguese, many nouns will end in -o when they refer to a male person or animal and -a if they refer to a female person or animal. The -o version is grammatically masculine, while the -a version is grammatically feminine. Here are some examples:

Masculine (-o)Feminine (-a)
menino
Translation: boy
menina
Translation: girl
filho
Translation: son
filha
Translation: daughter
tio
Translation: uncle
tia
Translation: aunt

There are a few other endings that are commonly used for gendered pairs as well:

  • -ão / -ã

    Animate masculine nouns ending in -ão can be made feminine by replacing -ão with :

    MasculineFeminine
    irmão
    Translation: brother
    irmã
    Translation: sister
    cidadão
    Translation: (male) citizen
    cidadã
    Translation: (female) citizen
    alemão
    Translation: German male
    alemã
    Translation: German female
  • -s, -r / -sa, -ra

    Animate masculine nouns ending in -r or -s can be made feminine by adding -a to the masculine form. For example:

    MasculineFeminine
    inglês
    Translation: English male
    inglesa
    Translation: English female
    francês
    Translation: French male
    francesa
    Translation: French female
    professor
    Translation: (male) teacher
    professora
    Translation: (female) teacher
    pintor
    Translation: (male) painter
    pintora
    Translation: (female) painter

Using the article to identify the gender of a noun

In some cases, the form of a noun does not change to reflect its gender, and the only way to determine whether it refers to a male or female person is to look at the article that precedes it. The article will always indicate whether the noun is masculine or feminine.

  • masculine articles → o, os meaning the; un meaning a, an; uns meaning some

  • feminine articles → a, as meaning the; una meaning a, an; unas meaning some

In Brazilian Portuguese, animate nouns ending in -e, -ista, -ante, or -ente are most likely to have the same form in the masculine and feminine. Look at the following examples:

MasculineFeminine
o artista
Translation: the (male) artist
a artista
Translation: the (female) artist
o dentista
Translation: the (male) dentist
a dentista
Translation: the (female) dentist
o comandante
Translation: the (male) commander
a comandante
Translation: the (female) commander
o gerente
Translation: the (male) manager
a gerente
Translation: the (female) manager
o intérprete
Translation: the (male) interpreter
a intérprete
Translation: the (female) interpreter
o estudante
Translation: the (male) student
a estudante
Translation: the (female) student

Using the whole noun to identify the gender

In some cases, the whole noun changes form to reflect the real-world sex or gender of the person or animal it represents:

MasculineFeminine
o rei
Translation: the king
a rainha
Translation: the queen
o ator
Translation: the actor
a atriz
Translation: the actress
o garçom
Translation: the waiter
a garçonete
Translation: the waitress

This way of marking gender is particularly common with nouns referring to animals, much like pairs like “rooster/hen” in English. For example:

  • Masculine: o carneiro meaning the ram

  • Feminine: a ovelha meaning the sheep

See more examples like those above on this list! Or, learn more about the names of animals specifically from our guide to the gender of animal names in Brazilian Portuguese!

How to identify the gender of inanimate nouns in Brazilian Portuguese?

Like with animate nouns, you can identify the gender of inanimate (non-living) nouns from the noun’s ending (e.g. -o / -a) or the gender of its article. Even though inanimate nouns don’t have a sex or gender, they will still have a grammatical gender: masculine or feminine. For example:

MasculineFeminine
carro
Translation: car
casa
Translation: house

However, some inanimate nouns may have additional endings other than -o, -a. In the sections below we’ll take you through a few common endings for masculine nouns, a few common endings for feminine nouns, and a few special cases, where gender may be more difficult to identify.

What are some common endings for masculine inanimate nouns?

When they don’t end in -o, masculine inanimate nouns can end in the vowels -i, -u, -á, or , or with particular endings like -ema, -oma, or -grama.

Masculine endingExample
-i
o abacaxi
Translation: the pineapple
-u
o chapéu
Translation: the hat
o chá
Translation: the tea
o pé
Translation: the foot
-ema
o problema
Translation: the problem
-oma
o sintoma
Translation: the symptom
-grama
o programa
Translation: the program

There is also a short list of inanimate nouns ending in the consonants -l, -m, or -r that are masculine:

Masculine endingExample
-l
o hospital
Translation: the hospital
-m
o jardim
Translation: the garden
-r
o mar
Translation: the sea

Finally, there are certain categories of inanimate nouns that are always masculine. Colors, numbers, months, and languages fall into these categories. These are some examples:

Colors
amarelo
Translation: yellow
Numbers
cinco
Translation: five
Months
agosto
Translation: August
Languages
português
Translation: Portuguese

What are some common endings for feminine inanimate nouns?

Aside from the feminine ending -a, inanimate feminine nouns also end in -ade, -agem, or -ície.

Feminine endingExample
-ade
a cidade
Translation: the city
-agem
a garagem
Translation: the garage
-ície
a superfície
Translation: the surface

When are inanimate nouns masculine or feminine by implication?

Sometimes, inanimate nouns will have a masculine or feminine gender by implication, meaning there is a second, unexpressed noun that determines the gender of the noun.

For example, o Amazonas meaning the Amazon is masculine by implication because the word o rio meaning river is implied and is a masculine noun.

This often happens with names of countries, lakes, mountains, oceans, and rivers (which are masculine) and with parts of the world, sciences and arts, and cities (which are feminine).

MasculineFeminine
o (rio) Amazonas
Translation: the Amazon river
a (parte do mundo) Europa
Translation: Europe
o (oceano) Pacífico
Translation: the Pacific ocean
as (ilhas) Maldivas
Translation: the Maldives
os (montes) Alpes
Translation: the Alps
a (cidade) Paris
Translation: Paris

How to identify the gender of inanimate nouns ending in ‘-ão’?

To identify the gender of inanimate nouns ending in -ão, follow these general rules:

  • When an inanimate noun ending in -ão is concrete, meaning it is a physical object in the real world, it is a masculine noun.

  • When an inanimate noun ending in -ão refers to an abstract idea, then it is feminine.

Take a look:

Masculine
(concrete)
Feminine
(abstract)
o limão
Translation: the lemon
a conclusão
Translation: the conclusion
o coração
Translation: the heart
a invenção
Translation: the invention
o pão
Translation: the bread
a questão
Translation: the question

How to identify the gender of nouns ending in ‘-e’ and ‘-z’?

When an inanimate noun ends in -e or -z the only reliable way to identify the noun’s gender is to check the gender of the article placed before it.

MasculineFeminine
o chocolate
Translation: the chocolate
a noite
Translation: the evening, night
o nariz
Translation: the nose
a voz
Translation: the voice

In case you cannot refer to the gender of the article for some reason, take a look at our list of common nouns ending in -e and -z and their genders!

What are some misleading nouns in relation to gender?

In a few cases, the ending of some inanimate objects can be misleading. Sometimes, they end with -a, but they are actually masculine nouns, and vice-versa. Take a look at the examples below and refer to our list of other misleading nouns!

MasculineFeminine
o clima
Translation: the climate
a cor
Translation: the color
o dia
Translation: the day
a foto
Translation: the photo
o planeta
Translation: the planet
a flor
Translation: the flower

What are some nouns that change meaning based on their gender?

Some Brazilian Portuguese nouns can be either masculine or feminine, but they change their meaning based on their gender. Even though the noun itself remains the same, the meaning will change, depending on whether you treat it as masculine or feminine. See below:

MasculineFeminine
o cabeça
Translation: the leader
a cabeça
Translation: the head
o capital
Translation: the investment
a capital
Translation: the capital city

Check out this list of nouns that change their meaning based on gender for more examples.

In summary

It is important to be able to identify the gender of Brazilian Portuguese nouns so that the adjectives and other words used to describe them can make sense. To do so, let’s remember a few rules:

  • Nouns for animate beings generally have two forms of nouns: masculine and feminine. They are usually identifiable by their endings (-o or -a), but some nouns may not change form, while others have specific forms to refer to a male or female.

  • Inanimate (non-living) nouns ending in vowels -i, -u, -á, -é, or particular endings such as -ema, -oma, -grama, -l, -m, -r are typically masculine.

  • Inanimate nouns ending in -a, -ade, -agem, -ície are typically feminine.

  • Nouns ending in -e, -z and some other special cases are not always clear-cut, but you can always check the gender of the article that accompanies the noun.

Now you can refer to these activities and double check what you learned!

Meet the Author

Fabiana Dametto Oliveira

Fabiana Dametto Oliveira

Grammar Writer

Fabiana was born and raised in São Paulo, Brazil. She holds a BA in Languages & Literatures and has several years of experience teaching Brazilian Portuguese as a foreign language. She's passionate about learning new languages and has lived in Ireland and Spain to enhance her English and Spanish skills. Besides exploring languages, she enjoys cooking, sports, and beach days.

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