Altre, mateix, tal, and cert all help a speaker locate a noun relative to what is already in the conversation. Altre adds or contrasts a member, mateix identifies an exact match, and tal and prenominal cert deliberately leave identity partly unspecified.
The surrounding determiner matters. English “another,” “the same,” and “a certain” look like single vocabulary items, but Catalan often builds their meanings from an article plus an agreeing word, and a change of position can change the interpretation.
The agreement patterns
| Meaning | Masculine singular | Feminine singular | Masculine plural | Feminine plural |
|---|---|---|---|---|
| other; another | altre | altra | altres | altres |
| same; very; self | mateix | mateixa | mateixos | mateixes |
| such; a certain | tal | tal | tals | tals |
| certain; some | cert | certa | certs | certes |
Aquestes mateixes normes internes continuen vigents.
These same internal rules remain in force.
Les altres dues candidates catalanes estaven convençudes que arribarien a la final.
The other two Catalan candidates were convinced that they would reach the final.
The second sentence shows the noun phrase as a system: article les, additive altres, numeral dues, noun candidates, adjective catalanes, and predicate convençudes all contribute different information.
Altre: addition or contrast
For English “another” before a singular count noun, Catalan normally uses un altre/una altra: un altre cafè, una altra cadira. This differs sharply from Spanish, where otro café normally lacks un. The visual similarity of Catalan altre and Spanish otro therefore hides an article difference.
Em pots portar un altre cafè, si us plau?
Can you bring me another coffee, please?
Necessitem una altra data perquè dilluns no pot venir tothom.
We need another date because not everyone can come on Monday.
The definite forms l'altre, l'altra, els altres, les altres identify the remaining or contrasting member(s): l'altre costat “the other side,” les altres persones “the other people.” Bare plural altres + noun introduces additional indefinite members: altres opcions “other options.” Plural uns altres/unes altres is also standard and presents a more explicitly bounded additional group: esperarem uns altres dos dies. In object position, d'altres + noun can likewise introduce further members: buscarem d'altres solucions.
Aquesta entrada està tancada; prova l'altra porta.
This entrance is closed; try the other door.
Si aquesta proposta no funciona, buscarem altres solucions.
If this proposal doesn't work, we'll look for other solutions.
Altre combines naturally after indefinite and negative quantifiers: alguna altra pregunta, cap altra sortida, qualsevol altra setmana. In these phrases it does not replace the first determiner; it adds the meaning “other.”
Mateix: exact identity and emphasis
For “the same,” use the definite article plus agreeing mateix: el mateix carrer, la mateixa hora, els mateixos errors, les mateixes paraules. A demonstrative may occupy the identifying slot instead: aquesta mateixa tarda “this very afternoon.”
Ens vam conèixer al mateix lloc i a la mateixa hora.
We met at the same place and at the same time.
T'ho enviaré aquesta mateixa tarda.
I'll send it to you this very afternoon.
The construction expresses identity, not merely similarity. Portem la mateixa jaqueta can mean that the jackets are of the same model and, depending on context, potentially the very same garment. If you mean resemblance without identity, say jaquetes iguals or una jaqueta semblant.
Mateix also reinforces a noun or pronoun with a “self/very” meaning: la directora mateixa, jo mateix, al centre mateix. This emphatic use often follows its anchor.
La directora mateixa ens va obrir la porta.
The director herself opened the door for us.
Ho pots comprovar tu mateixa ara mateix.
You can check it yourself right now.
English leaves same unchanged, whereas Catalan agreement remains visible even after a demonstrative: aquest mateix document, aquesta mateixa carta, aquests mateixos documents, aquestes mateixes cartes.
Tal: a type, an unspecified referent, or a named stranger
In determiner use, gender-invariable tal and plural tals can mean “such” or refer to an entity whose exact identity is left unspecified. The construction is common in (formal) instructions and argumentation: en tal cas “in such a case,” sota tals condicions “under such conditions.” It also survives in everyday fixed expressions such as tal dia com avui.
En tal cas, ajornarem la reunió fins dimarts.
In that case, we'll postpone the meeting until Tuesday. (formal)
No acceptarem tals condicions sense negociar-les.
We will not accept such conditions without negotiating them. (formal)
With an indefinite article and a personal name, un tal/una tal means “a certain person called...,” often signaling that the speaker does not know the person or is keeping some distance.
Ha trucat un tal Oriol i ha dit que ja ens coneixíem.
A certain Oriol called and said that we already knew each other.
English tall is a misleading look-alike: Catalan tal has nothing to do with height. “A tall woman” is una dona alta, not una dona tal. Also distinguish determiner tal from the conjunction-like expression tal com “just as/as,” which is invariable.
Cert before and after the noun
Before a noun, cert/certa/certs/certes means “a certain” or “some.” It tells the listener that the referent is relevant but not fully identified, and it may imply that the speaker knows more than is being said: certa persona, certs detalls.
Certa persona de l'oficina ja coneixia la notícia.
A certain person at the office already knew the news.
Hem detectat certes diferències importants entre les dues versions.
We have detected certain important differences between the two versions.
An indefinite article can precede prenominal cert and soften or measure a quality: una certa por, un cert malestar. It often corresponds to English “a certain amount/degree of,” not to a fully identifiable individual.
La proposta ha provocat una certa incomoditat entre els veïns.
The proposal has caused a certain amount of unease among the neighbors.
After the noun, cert is descriptive and means “true, reliable, sure.” The contrast is clearest in this minimal pair:
M'han explicat una certa història, però encara no et puc dir quina.
They've told me a certain story, but I can't tell you which one yet.
M'han explicat una història certa, no pas una llegenda.
They've told me a true story, not a legend.
Stacking and neutral adjective order
These items occupy ordered layers rather than a single interchangeable slot. Natural combinations include aquestes mateixes dues normes, les altres tres propostes, alguna altra solució pràctica, and una certa resposta evasiva. Identifying determiners come first, then identity/additive or quantity material, then the noun and its neutral descriptive modifiers.
The four paradigms described here belong to both Central and Valencian standards. There is no need to alternate forms merely to signal region. Colloquial pronunciations that reduce consonants should not be reproduced in general-standard spelling.
For the broader contrast between prenominal and postnominal readings, see Adjective Position.
Common Mistakes
1. Copying Spanish article distribution with altre.
❌ Vull altre got d'aigua.
Incorrect in the neutral meaning 'another' — singular altre normally needs un/una.
✅ Vull un altre got d'aigua.
I want another glass of water.
2. Omitting the article from the same.
❌ Sempre comet mateixa errada.
Incorrect — the ordinary identity construction is la mateixa.
✅ Sempre comet la mateixa errada.
She always makes the same mistake.
3. Guessing a Catalan noun's gender from Spanish.
❌ Hem vist una altra senyal clara.
Incorrect — senyal is masculine in standard Catalan.
✅ Hem vist un altre senyal clar.
We saw another clear sign.
4. Putting every descriptive modifier before the noun.
❌ Ens cal una altra pràctica solució.
Unnatural neutral order — pràctica describes solució and normally follows it.
✅ Ens cal una altra solució pràctica.
We need another practical solution.
5. Missing the meaning change caused by position.
❌ Busquem una resposta certa. — intended: We are looking for a certain answer.
Wrong meaning — postnominal certa says that the answer is true or reliable.
✅ Busquem una certa resposta.
We are looking for a certain answer.
Key Takeaways
Use un altre/una altra for an additional singular member, definite l'altre/els altres for a known contrast, and bare altres for indefinite plural addition. Use an article or demonstrative with agreeing mateix to express exact identity. Formal tal/tals leaves type or identity unspecified, while un tal + name distances the speaker. Prenominal cert means “a certain/some”; postnominal cert means “true or reliable.”
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