Past Participle: Regular Forms

The past participle (particípio passado) is one of the most useful verb forms in Portuguese. It is the single form that, once you know it, unlocks every compound tense (tenho falado, tinha falado, terei falado, teria falado, tenha falado, tivesse falado…), the entire passive voice (foi escrito), and a whole family of adjectival constructions (está cansado, uma porta fechada). This page lays out the regular formation rules. Irregular forms live on a separate page, because there are enough of them to need their own treatment, but roughly nine out of ten Portuguese verbs follow the simple pattern below.

The core rule

Drop the infinitive ending and replace it with the participle ending for that verb class:

Notice that the -er and -ir classes collapse into the same participle ending. They already share the regular preterite paradigm (bebeu / partiu) and the past participle follows the same logic: once you leave the first conjugation behind, -ido does the work. You only need to keep -ar distinct.

First conjugation (-ar → -ado)

This is the largest verb class in Portuguese by a wide margin. Any verb that ends in -ar and isn't on the short irregulars list forms its participle in -ado.

Spelling inside the stem is preserved

Orthographic quirks in the infinitive carry over unchanged. Começar keeps its cedilla (começado), chegar keeps its -g- (chegado), ficar keeps its -c- (ficado). There are no participle-specific spelling changes in the first conjugation — the stem is the stem, and -ado simply attaches.

Habituar → habituado: the hiatus -uar survives, and the participle is habituado, not habitado.

Second conjugation (-er → -ido)

Almost every regular -er verb forms its participle in -ido. The stem is preserved; only the ending changes.

Third conjugation (-ir → -ido)

The third conjugation uses the same ending as the second: -ido. Most regular -ir verbs follow this pattern cleanly.

The stem does not change

One of the reasons Portuguese past participles are easier than preterites or subjunctives is that the stem never shifts under stress, vowel harmony, or phonological pressure. Whatever the stem looks like in the infinitive is exactly what it looks like in the participle.

Even verbs with thoroughly irregular preterites like poder (pude, pudeste, pôde…) and querer (quis, quiseste, quis…) have completely regular past participles: podido, querido. The participle pays no attention to the chaos elsewhere in the verb.

Where the participle shows up

The same regular participle does several jobs:

1. Compound tenses with ter as auxiliary: tenho falado, tinha comido, terá partido.
2. Passive voice with ser: o email foi enviado, a casa foi vendida.
3. Resultative state with estar: estou cansado, a loja está fechada.
4. As an adjective: uma lição aprendida, um problema resolvido.

The form is always the same — falado, comido, partido — but agreement behavior differs across these uses. That's handled on its own page (agreement); for now, just know that the regular form you learn on this page is the base that feeds into all four constructions.

Difference from English and from Spanish

Compared to English, the Portuguese regular past participle is more regular. English has "worked, lived, studied" — predictable — but also "gone, given, done, eaten, seen, taken, broken, driven, flown" — unpredictable. The ratio of irregular-to-regular past participles in English is much higher than in Portuguese. If you know Portuguese is -ado or -ido and you have the irregular list, you're more or less done.

Compared to Spanish, the participle endings are identical (-ado, -ido), and the irregular lists overlap heavily (hecho/feito, dicho/dito, visto/visto, abierto/aberto, escrito/escrito, puesto/posto). The two languages diverge sharply only on agreement (Portuguese compound tenses with ter are invariant, just like Spanish compounds with haber) and on the double-participle phenomenon (which is more developed in Portuguese).

Spanish speakers: the form and the ending logic you already know carry over — it is the auxiliary (ter, not haber) and the usage of the compound tenses that shift significantly. See vs Spanish present perfect.

Why one ending for two classes?

A brief historical note. Latin had three distinct past participle suffixes (-ātus, -ītus, -ūtus). Vulgar Latin collapsed them: -ātus survived for the first conjugation and gave Portuguese -ado, while -ītus generalized across the second and third conjugations and gave Portuguese -ido. The -ūtus group (surviving in Italian -uto, French -u) is essentially gone from Portuguese. This is why Portuguese has two regular endings instead of three — a Latin merger that simplified the system over the centuries.

A worked example: all three classes in one paragraph

One sentence using a regular participle from each conjugation: trabalhado (from -ar), comido (from -er), dormido (from -ir). The compound tense stays parallel; only the main verb changes.

Common mistakes

English speakers often confuse the gerund (falando = "speaking") with the past participle (falado = "spoken"), because the English perfect progressive uses -ing ("I have been speaking"). Portuguese uses the past participle here, not the gerund.

Don't overgeneralize -ido to first-conjugation verbs. Estudar is -ar, so its participle is estudado. The -ido ending is for -er and -ir verbs only.

The participle gostado is perfectly regular, but the preposition requirement of gostar stays in force across every tense — including the compound.

Key takeaways

• -ar → -ado: falado, comprado, estudado, cantado, trabalhado.
• -er → -ido: comido, bebido, corrido, vendido, conhecido.
• -ir → -ido: partido, dormido, servido, vestido, pedido.
• The stem is preserved exactly; no vowel or consonant changes affect the regular participle.
• The past participle is the single form that feeds compound tenses, passives, resultative estar-constructions, and adjectival uses.
• Verbs with irregular participles (abrir → aberto, fazer → feito, ver → visto) are a separate, memorizable list — see irregular forms.

Continue to irregular forms for the memorization list, or jump to compound tenses to see how the participle combines with ter across the tense system.