Noun-Forming Suffixes

A noun-forming suffix is a morpheme that attaches to a stem — a verb, an adjective, or another noun — and turns it into a new noun. These suffixes do the heavy lifting of Portuguese vocabulary: the language has roughly twenty truly productive noun-forming suffixes, and once you know what each one does, you can read a newspaper and predict most of the nouns you meet.

Each suffix has a semantic niche (action, abstract quality, agent, place, collective, pejorative) and a grammatical assignment (what word class it attaches to, and what gender the resulting noun takes). This page walks through the productive inventory, groups the suffixes by niche, and gives the register notes — some suffixes are neutral, some are pejorative, some are affectionate — that you need to use them right.

How suffixes carry gender

Before looking at the suffixes one by one, one general point: most Portuguese noun suffixes predict the gender of the noun they form. This is one of the most useful regularities in the language.

If you know the suffix, you know the article: a construção, o sofrimento, a dignidade, o socialismo, a paisagem. This is not a perfect rule — o dia, a mão, o coração are famous counter-examples — but for derived nouns it is highly reliable. See the gender rules page for the full picture.

Action and result nouns from verbs

The first and largest family of productive suffixes takes a verb and turns it into a noun meaning "the action of V-ing" or "the result of V-ing."

-ção / -são

The cognate of English -tion / -sion. Enormously productive: almost any Latinate verb can form a noun in -ção or -são. The result is always feminine. The choice between -ção and -são depends on the verb's historical class.

When does the suffix give -são instead of -ção? Historically, -são comes from Latin -sionem, which attached to verb stems ending in -d-, -t-, -s-. So verbs ending in -dir, -ter, -ceder tend to give -são: decidir → decisão, inverter → inversão, ceder → cessão. Verbs with stems ending in other consonants give -ção: criar → criação, informar → informação. This is a historical pattern, not a rule you apply — learn the nouns as they come.

-mento

Also "action or result of V-ing." Masculine. Competes with -ção on some verbs, with a subtle nuance: -mento often carries a more concrete or result-oriented sense, while -ção tends toward the abstract action.

Note the interesting case of descobrir: it has two nouns, o descobrimento (usually the historical Age of Discoveries) and a descoberta (any individual discovery, and the more everyday word). This kind of semantic split between paired -mento and -ção / -a derivations is not uncommon.

Regressive derivation

As covered in the word-formation overview, Portuguese also forms action nouns by chopping the verb ending rather than adding a suffix: trabalhar → o trabalho, pescar → a pesca, falar → a fala. These are not suffix-formed but belong in the same semantic niche; they are often the most frequent words in their families.

Abstract nouns from adjectives

The second major family takes an adjective and turns it into an abstract noun — the quality or state of being X.

-dade / -idade

The cognate of English -ity. Feminine. Highly productive on Latinate adjectives.

Spelling note: when the adjective ends in z, the z becomes c before i: feliz → felicidade, capaz → capacidade. When it ends in l, the suffix replaces the l: real → realidade (strictly realitade in Latin, simplified in Portuguese).

-eza

Also abstract quality. Feminine. Often carries a slightly more concrete or physical sense than -dade, and often applies to adjectives that describe physical qualities or social qualities with a visible manifestation.

-ura

Another abstract-quality suffix, feminine. Often physical or sensory: a tactile or visible quality. Also used for certain result nouns from verbs.

Note the competition: bondade (from bom — goodness), maldade (from mau — evil), doçura (from doce — sweetness), tristeza (from triste — sadness). Portuguese has no single rule for which suffix a given adjective takes; you have to learn the pairs.

Doctrines and adherents: -ismo and -ista

The two go together. -ismo forms the name of a doctrine or system; -ista forms the noun for its adherent.

-ismo

Masculine. Hugely productive.

-ista

Common gender (o/a). Adherent of the doctrine, or practitioner of the profession.

Note the common gender of -ista nouns: o dentista (a male dentist), a dentista (a female dentist). The suffix itself does not change; only the article carries the gender. See common gender nouns for more.

Agent nouns: -dor / -dora, -tor / -tora

Agent nouns — "one who does X" — are gender-marked in Portuguese.

Note that -dor / -dora is often also the name of a tool or machine: o aspirador (vacuum cleaner), o computador (computer), a impressora (printer), a lavadora / a máquina de lavar (washing machine). Portuguese uses the same suffix for both the human agent and the instrument. Context decides.

Profession / location: -eiro / -eira

A semantically rich suffix with four distinct uses:

1. Profession: carpinteiro, jornaleiro, padeiro, pedreiro, cozinheiro, sapateiro
2. Container: cinzeiro (ashtray), açucareiro (sugar bowl), saleiro (salt shaker)
3. Tree or plant that bears a fruit: laranjeira (orange tree), bananeira (banana tree), macieira (apple tree — from maçã)
4. Place associated with X: galinheiro (henhouse), pombeiro (dovecot), formigueiro (anthill)

Professional / place: -ário / -ária

Often educated or institutional, from Latin -arius. Masculine / feminine. Also used for places.

Collective and affective: -ada

A workhorse of colloquial PT-PT. -ada forms collective nouns (a group of Xs, or an action done collectively), and also a specific blow or quantity.

Note how -ada in colloquial PT-PT often forms affective group nouns — a rapaziada, a malandrada, a patuscada — that are affectionately dismissive of the group named. Spanish has a version (la muchachada), but PT-PT uses this productively in everyday speech.

Action or collective: -agem

Feminine. From French -age. Forms both action nouns and collectives.

Pejorative and evaluative: -ice

Feminine. Often pejorative, describing foolish or excessive behaviour typical of a category.

Augmentative / pejorative: -ão, -ona, -aço

These are augmentative suffixes that attach to nouns (and some adjectives) to create larger, stronger, or often pejorative versions. See augmentatives for the full treatment; here is a brief entry in the noun-suffix family.

Summary: suffixes by semantic category

Common mistakes

Key takeaways

• Portuguese uses about twenty productive noun-forming suffixes. Most of them predict the gender of the noun they form.
• Action/result from verbs: -ção/-são (feminine), -mento (masculine), -agem (feminine), regressive derivation (variable).
• Abstract quality from adjectives: -dade/-idade (feminine), -eza (feminine), -ura (feminine), -ice (feminine, often pejorative).
• Doctrines and adherents: -ismo (masculine, doctrine) / -ista (common gender, adherent).
• Agent from verbs: -dor/-dora, -tor/-tora — gender-marked with distinct masculine and feminine forms.
• Profession / container / tree / place: -eiro/-eira, -ário/-ária — one suffix, four semantic niches.
• Colloquial collective / portion: -ada (feminine) — rapaziada, colherada, caminhada.
• Spelling adjusts when the base ends in z or l: feliz + -idade → felicidade, igual + -dade → igualdade (with loss of l).
• Learn the suffix and its semantic niche, and you will predict the gender, the word class, and often the register of any derived noun you meet.