Gender Exceptions | Portuguese (Portugal) Grammar

The Portuguese gender system is mostly predictable, but a stubborn minority of nouns refuse to follow the rules on the gender rules page. These exceptions are not rare or bookish — some of them (a mão, o dia, o problema) are among the most common words in the language. There's no way around memorising them. This page collects the ones worth knowing early, grouped so the memorisation is as painless as possible.

If you haven't read the gender basics page yet, start there.

Feminine nouns ending in -o

The -o = masculine rule is about 92% reliable, which means there are a handful of feminine -o nouns you simply have to know. The list is short but crucial:

a mão — the hand
a foto — the photo (short for a fotografia)
a moto — the motorbike (short for a motocicleta)
a tribo — the tribe
a libido — the libido

Magoei a mão direita a cortar cebolas.

I hurt my right hand cutting onions.

Tiraste aquela foto com o telemóvel ou com a máquina?

Did you take that photo with the phone or the camera?

A minha mãe comprou uma moto em segunda mão.

My mother bought a second-hand motorbike.

The pattern with foto and moto is worth understanding: these are short forms of longer feminine nouns (fotografia, motocicleta), and they keep the original gender even though the clipped form looks masculine. This principle — truncated words keep the gender of the full form — applies elsewhere in the language too.

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The mnemonic for the short feminine -o list: "Mão, foto, moto, tribo, libido — five feminines that end in -o." Drill it until it feels automatic.

Masculine nouns ending in -a

This group is larger and more important. It splits into two main subgroups.

The Greek -ma words

Nouns of Greek origin ending in -ma are masculine, even though -a endings are usually feminine. These are high-frequency, academic-register words, and most have English cognates.

o problema — the problem
o tema — the topic, theme
o sistema — the system
o programa — the programme
o dilema — the dilemma
o cinema — the cinema
o poema — the poem
o drama — the drama
o clima — the climate
o idioma — the language
o aroma — the aroma
o teorema — the theorem
o diagrama — the diagram

O clima no Porto é muito diferente do clima no Algarve.

The climate in Porto is very different from the climate in the Algarve.

O meu tema de tese é um problema ainda sem solução.

My thesis topic is a problem with no solution yet.

Other masculine -a words

A smaller, unrelated set of common words are masculine despite ending in -a. These don't have a unifying etymology — you just memorise them.

o dia — the day
o mapa — the map
o planeta — the planet
o cometa — the comet
o sofá — the sofa (from French sofa, so also masculine)

O dia está lindo, vamos à praia.

The day is beautiful, let's go to the beach.

Preciso de um mapa antes de conduzir pelo interior.

I need a map before driving through the interior.

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The most important of these to remember is o dia — it appears constantly in greetings (bom dia, todos os dias, durante o dia), and getting its gender wrong makes you sound like a beginner immediately.

Nouns with two genders (epicene and common-gender nouns)

Some nouns — especially those referring to people by profession, role, or affiliation — take either gender depending on the person referred to. The article and adjective change, but the noun itself stays the same. These are called common-gender or two-gender nouns.

Common patterns:

Professions and roles in -ista: o/a jornalista, o/a artista, o/a dentista, o/a pianista, o/a motorista, o/a turista
Participle-derived nouns in -ente and -ante: o/a estudante, o/a cliente, o/a gerente, o/a cantante, o/a imigrante
Miscellaneous: o/a colega, o/a intérprete, o/a indígena, o/a jovem, o/a fã

A minha colega é uma artista muito talentosa.

My (female) colleague is a very talented artist.

O meu colega é jornalista no Público.

My (male) colleague is a journalist at Público.

Notice how colega stays the same but flips gender through the article. Portuguese has actively extended this pattern in recent decades as women have entered previously male-dominated professions.

Personagem — a special case

The word personagem (character, as in a novel or film) is a well-known problem. Traditionally it was feminine (a personagem) in European Portuguese, and you'll see a personagem in most literary criticism and in PT-PT reference grammars. In Brazil, o personagem is more common. In modern PT-PT, many speakers now use o personagem for male characters and a personagem for female characters — effectively treating it as an epicene. Any of the three usages is defensible. The safe choice for PT-PT writing is a personagem regardless of the character's sex.

A personagem principal do romance é um advogado de meia-idade.

The main character of the novel is a middle-aged lawyer.

False cognates of gender with Spanish

If you already speak Spanish, beware: gender does not always line up across the two languages, and some of the mismatches are for everyday words.

Meaning	Portuguese	Spanish
tree	a árvore (fem.)	el árbol (masc.)
pain	a dor (fem.)	el dolor (masc.)
colour	a cor (fem.)	el color (masc.)
honey	o mel (masc.)	la miel (fem.)
nose	o nariz (masc.)	la nariz (fem.)
blood	o sangue (masc.)	la sangre (fem.)
milk	o leite (masc.)	la leche (fem.)
salt	o sal (masc.)	la sal (fem.)
habit	o costume (masc.)	la costumbre (fem.)
team	a equipa (fem.)	el equipo (masc.)

A árvore mais antiga da cidade fica no Jardim da Estrela.

The oldest tree in the city is in Jardim da Estrela.

O leite já está fora do prazo — deita-o fora.

The milk is past its date — throw it out.

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Spanish speakers learning Portuguese: make a personal "gender-swap" flashcard deck for these words specifically. You'll feel the pull of your Spanish intuition for months, and only repetition breaks it.

Letters of the alphabet

Letter names in Portuguese are grammatically masculine in modern usage: o a, o b, o cê, o dê, o ele, o eme. Plural forms take masculine agreement too: dois bês, três eles, quatro emes. When we explicitly use the feminine noun letra ("letter") in front of a name, that word carries its own feminine gender: a letra A, a letra S.

A letra A é a primeira do alfabeto.

The letter A is the first of the alphabet.

Escreve-se com dois eles ou com um?

Is it written with two Ls or with one?

In dois eles above, eles is the masculine plural of the letter name ele (the letter L). The logic is that without the explicit word letra, speakers default to the masculine (matching o alfabeto, o som, o símbolo). With letra present, feminine agreement takes over: a letra A é bonita.

The sea, land, and Earth

Four commonly confused geographical nouns:

o mar — the sea (masculine)
a terra — the land, the earth (feminine)
a Terra — the planet Earth, capitalised (feminine)
o planeta — the planet (masculine, as above in the Greek -a group)

O mar está agitado hoje, melhor não ir nadar.

The sea is rough today, better not go swimming.

A terra do Alentejo é árida no verão.

The land in the Alentejo is arid in summer.

Top 30 tricky genders to memorise

A consolidated list of the most common exceptions that trip up English speakers. If you know these, you'll avoid the overwhelming majority of embarrassing gender errors in the first year of study.

Noun	Gender	Meaning	Why it's tricky
a mão	fem.	hand	Ends in -ão, which is usually masculine
a foto	fem.	photo	Ends in -o, short for feminine fotografia
a moto	fem.	motorbike	Ends in -o, short for feminine motocicleta
a tribo	fem.	tribe	Ends in -o
a libido	fem.	libido	Ends in -o
o dia	masc.	day	Ends in -a
o mapa	masc.	map	Ends in -a
o planeta	masc.	planet	Ends in -a
o problema	masc.	problem	Ends in -a (Greek -ma)
o sistema	masc.	system	Ends in -a (Greek -ma)
o tema	masc.	topic	Ends in -a (Greek -ma)
o programa	masc.	programme	Ends in -a (Greek -ma)
o cinema	masc.	cinema	Ends in -a (Greek -ma)
o clima	masc.	climate	Ends in -a (Greek -ma)
o drama	masc.	drama	Ends in -a (Greek -ma)
o idioma	masc.	language	Ends in -a (Greek -ma)
a cor	fem.	colour	Ends in -or (-or usually masculine)
a dor	fem.	pain	Ends in -or
a flor	fem.	flower	Ends in -or
a árvore	fem.	tree	False cognate with Spanish el árbol
o leite	masc.	milk	False cognate with Spanish la leche
o mel	masc.	honey	False cognate with Spanish la miel
o sal	masc.	salt	False cognate with Spanish la sal
o nariz	masc.	nose	False cognate with Spanish la nariz
o sangue	masc.	blood	False cognate with Spanish la sangre
a equipa	fem.	team	False cognate with Spanish el equipo
a criança	fem.	child	Epicene — always feminine
a pessoa	fem.	person	Epicene — always feminine
a vítima	fem.	victim	Epicene — always feminine
a testemunha	fem.	witness	Epicene — always feminine

Common Mistakes

❌ O minha mão está dormente.

Incorrect — mão is feminine, so *a minha mão*.

✅ A minha mão está dormente.

My hand is numb.

❌ A dia está frio.

Incorrect — dia is one of the best-known masculine -a words.

✅ O dia está frio.

The day is cold.

❌ A problema dele é a falta de tempo.

Incorrect — problema is masculine (Greek origin), even though it ends in -a.

✅ O problema dele é a falta de tempo.

His problem is lack of time.

❌ El leite da minha avó era sempre fresco.

Incorrect — Portuguese *leite* is masculine; this looks like Spanish interference.

✅ O leite da minha avó era sempre fresco.

My grandmother's milk was always fresh.

❌ O criança foi feliz.

Incorrect — criança is epicene and takes feminine agreement even for a boy.

✅ A criança foi feliz.

The child was happy.

For the specialised cases where a single noun shape takes both genders with completely different meanings (like o capital vs a capital), move on to the nouns that change meaning with gender page.