Spanish noun gender and plurals, without the guessing
Most Spanish nouns ending in -o are masculine and most ending in -a are feminine, and the article in front must match. To make a plural, add -s after a vowel, -es after a consonant, and change a final -z to -c before adding -es. The exceptions are few enough to learn as a list.
Draft copy. Every claim needs a native-speaker check before publishing — the byline is what makes this citable, so it has to be earned.
Gender is grammar, not meaning
A table is not feminine in any sense you would recognise. La mesa is feminine because of how the word behaves — which article it takes, which adjective ending follows it. Stop looking for logic in the object and start looking at the ending of the word.
| Ending | Usually | Examples |
|---|---|---|
| -o | masculine | el trabajo, el gato, el pollo |
| -a | feminine | la casa, la cerveza, la clase |
| -ción, -sión, -dad, -tad | feminine | la profesión, la edad, la ciudad |
| -aje, -or | masculine | el equipaje, el deporte, el color |
The exceptions that actually come up
Some very common words break the -o/-a rule, and because they are common you meet them in week one.
- el problema, el pan, el idioma, el día — masculine despite the ending
- la mano, la foto — feminine despite the -o
- la sal, la carne, la gente — feminine, no ending clue at all
Learn these as vocabulary with the article attached. Never learn problema; learn el problema. It costs nothing extra and saves the error permanently.
Words that change with the person
For people and animals, many nouns simply swap the ending:
- gato / gata, perro / perra
- esposo / esposa, niño / niña
- amigo / amiga
And some do not change at all — the article does the work: el estudiante / la estudiante, el artista / la artista.
Making plurals
Three rules, and they cover almost everything.
| The word ends in | Add | Example |
|---|---|---|
| a vowel | -s | perro → perros, clase → clases |
| a consonant | -es | reloj → relojes, profesión → profesiones |
| -z | change z to c, then -es | arroz → arroces, lápiz → lápices |
Watch the accent in the second row. Profesión has a written accent in the singular and profesiones does not, because adding the syllable moves the stress to where Spanish would put it anyway. The accent was only ever there to override the default.
In practice
- el pollo → los pollos
- la cerveza → las cervezas
- el pan → los panes
- el vegetal → los vegetales
- la clase → las clases
Notice the article pluralises too. Gender and number are not decorations on the noun — they run forward through the whole phrase, and getting the noun right is what makes the article and the adjective fall into place.
Next
→ El, la, un, una: which article goes with which noun
Topics Nouns and articles
Gender and plurals
Eight questions on the endings that tell you the gender, the common words that break the pattern, and the three plural rules.
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1Which is right?
Answer
el problema — *Problema* ends in -a and is masculine anyway — one of the very common exceptions. Learn it as *el problema*, never as *problema* on its own.
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2Which is right?
Answer
la mano — *Mano* is feminine despite the -o, and *foto* behaves the same way. The -o/-a guide is reliable, not absolute.
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3The plural of *lápiz* is:
Answer
lápices — A final -z becomes -c before -es: *lápiz → lápices*, *arroz → arroces*. The accent stays, because the stress has not moved.
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4The plural of *profesión* is:
Answer
profesiones — Consonant ending, so add -es — and the written accent goes. The extra syllable puts the stress where the rule would put it anyway, so nothing needs marking.
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5In Spanish, a noun's gender is decided by:
Answer
the ending of the word, and the article and adjective forms it takes — A table is not feminine in any sense you would recognise. *La mesa* is feminine because of how the word behaves, so look at the ending rather than the object.
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6*La sal*, *la carne* and *la gente* are:
Answer
feminine, with no ending clue at all — learn them with the article attached — Nothing in the ending tells you, so the article has to come with the word from the first time you meet it. It costs nothing and saves the error permanently.
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7Which noun keeps one form for a man and a woman, leaving the article to do the work?
Answer
*estudiante* — *El estudiante* and *la estudiante*, like *el artista* and *la artista*. The others swap their ending: *niño / niña*, *esposo / esposa*.
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8The plural of *el pan* is:
Answer
los panes — Consonant ending, so -es — and the article pluralises with it. Number runs forward through the whole phrase, not just the noun.