# alterar
## Asturian
### Verb

alterar (first-person singular indicative present altero, past participle alteráu)
* Alternative form of alteriar

## Catalan
### Etymology

Borrowed from Latin alterāre.

### Pronunciation

* IPA: (Central, Balearic) [əl.təˈɾa]
* IPA: (Valencia) [al.teˈɾaɾ]
* Rhymes: -a(ɾ)

### Verb

alterar (first-person singular present altero, first-person singular preterite alterí, past participle alterat); root stress: (Central, Valencia, Balearic) /e/
* to alter
* to upset
* (reflexive) to become upset

#### Related terms

* alteració

### Further reading

* “alterar” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
* “alterar”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025
* “alterar” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
* “alterar” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

## Galician
### Etymology

From Latin alterāre.

### Verb

alterar (first-person singular present altero, first-person singular preterite alterei, past participle alterado)
* to alter
* to upset, to anger
* (reflexive) to become upset or angry

#### Conjugation

$^1$Less recommended.

#### Related terms

* alteración

### Further reading

* “alterar”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2025

## Ido
### Etymology

Borrowed from English alter, French altérer, German alterieren, Italian alterare, Spanish alterar, from Latin alterō (“I change, alter”), from alter (“the other”), from Proto-Indo-European *h₂élteros (“the other of two”).

### Pronunciation

* IPA: /al.teˈrar/

### Verb

alterar (present tense alteras, past tense alteris, future tense alteros, imperative alterez, conditional alterus)
* (transitive) to alter (modify the nature or quality of a thing, generally for the worse)
* (transitive) to spoil, debase (currency), corrupt (language)

#### Conjugation
## Interlingua
### Verb

alterar
* to alter

#### Conjugation

| infinitive | infinitive | alterar | alterar |
| participle | participle | present | perfect |
| participle | participle | alterante | alterate |
| active | | simple | perfect |
| active | present | altera | ha alterate |
| active | past | alterava | habeva alterate |
| active | future | alterara | habera alterate |
| active | conditional | alterarea | haberea alterate |
| active | imperative | altera | |
| passive | | simple | perfect |
| passive | present | es alterate | ha essite alterate |
| passive | past | esseva alterate | habeva essite alterate |
| passive | future | essera alterate | habera essite alterate |
| passive | conditional | esserea alterate | haberea essite alterate |
| passive | imperative | sia alterate | |

#### Related terms

* alteration

## Occitan
### Pronunciation

* This entry needs pronunciation information. If you are familiar with the IPA then please add some!

### Verb

alterar
* to alter

#### Related terms

* alteracion

## Portuguese
### Etymology

Borrowed from Latin alterāre.

### Pronunciation

* (Brazil) IPA: /aw.teˈɾa(ʁ)/ [aʊ̯.teˈɾa(h)]
* (Brazil) IPA: /aw.teˈɾa(ʁ)/ [aʊ̯.teˈɾa(h)]
** (São Paulo) IPA: /aw.teˈɾa(ɾ)/ [aʊ̯.teˈɾa(ɾ)]
** (Rio de Janeiro) IPA: /aw.teˈɾa(ʁ)/ [aʊ̯.teˈɾa(χ)]
** (Southern Brazil) IPA: /aw.teˈɾa(ɻ)/ [aʊ̯.teˈɾa(ɻ)]
* (Portugal) IPA: /al.tɨˈɾaɾ/ [aɫ.tɨˈɾaɾ]
* (Portugal) IPA: /al.tɨˈɾaɾ/ [aɫ.tɨˈɾaɾ]
** (Southern Portugal) IPA: /al.tɨˈɾa.ɾi/ [aɫ.tɨˈɾa.ɾi]
* Hyphenation: al‧te‧rar

### Verb

alterar (first-person singular present altero, first-person singular preterite alterei, past participle alterado)
* to alter, change

#### Conjugation

$^1$Brazilian Portuguese. $^2$European Portuguese.

#### Quotations

For quotations using this term, see Citations:alterar.

#### Related terms

* alteração
* outro

### Further reading

* “alterar” in Dicionário Aberto based on Novo Diccionário da Língua Portuguesa de Cândido de Figueiredo, 1913

## Spanish
### Etymology

Borrowed from Latin alterāre.

### Pronunciation

* IPA: /alteˈɾaɾ/ [al̪.t̪eˈɾaɾ]
* Audio (Venezuela):(file)
* Rhymes: -aɾ
* Syllabification: al‧te‧rar

### Verb

alterar (first-person singular present altero, first-person singular preterite alteré, past participle alterado)
* (transitive) to alter, to change
    Synonyms: cambiar, modificar, mudar
* (transitive) to upset
* (reflexive) to get angry, upset

#### Conjugation

$^1$Mostly obsolete, now mainly used in legal language. $^2$Argentine and Uruguayan voseo prefers the tú form for the present subjunctive.
These forms are generated automatically and may not actually be used. Pronoun usage varies by region.

#### Derived terms

* alterable
* alterado

#### Related terms

* alteración

### Further reading

* “alterar”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10