Quantifier Determiners: muito, pouco, bastante, tanto, vários

Quantifier determiners tell you how much or how many of a noun you are dealing with — the Portuguese equivalents of English much, many, a lot of, few, little, enough, several, numerous, so much. Where English splits the labour between much (for uncountable nouns: much time) and many (for countable nouns: many friends), Portuguese uses a single lexical family and lets agreement carry the count/mass distinction: muito tempo (much time) versus muitos amigos (many friends). One word, two endings, two meanings — the system is actually tidier than English.

This page covers the main quantifiers (muito, pouco, bastante, tanto, vários, alguns, diversos, numerosos, demais), their agreement patterns, the crucial adverb-vs-determiner distinction (muito bom = very good, invariable; muitos livros = many books, agreeing), and the traps that English speakers fall into with each one. Todo, cada, algum, nenhum have their own treatment on the indefinite determiners page — here we focus on the size/amount quantifiers.

Muito / muita / muitos / muitas — much, many, a lot of

Muito is the workhorse of Portuguese quantification. As a determiner (before a noun), it inflects for gender and number. As an adverb (modifying a verb, adjective, or another adverb), it is invariable.

Muito as a determiner — agreeing

With singular mass nouns, the singular forms translate English much or a lot of:

With plural count nouns, the plural forms translate English many or a lot of:

The elegance of the system is that a single lemma (muito) handles both much (singular) and many (plural) — the agreement does the semantic work.

Muito as an adverb — invariable

When muito modifies a verb, an adjective, or another adverb, it means very or a lot and does not inflect. This is the single most common error: English speakers, trained to make Portuguese words agree, want to write muita bonita because bonita is feminine. Resist. The muito that modifies bonita is an adverb; it has no gender to agree with.

The test is simple: if muito is answering how much of the noun?, it is a determiner and agrees. If it is answering how very? or how much of the action?, it is an adverb and stays frozen.

Same meaning, two constructions. The first uses ter + noun; the second uses estar + adjective. The grammatical role of muito shifts accordingly.

Pouco / pouca / poucos / poucas — little, few, not much, not many

Pouco is the negative counterpart of muito — it asserts a small quantity, often with a faintly critical undertone (not enough, not as much as one would like). Like muito, it agrees as a determiner and stays invariable as an adverb.

Pouco as a determiner

Note the implied judgment: poucas pessoas sabem carries a quiet fewer than you'd expect. English few carries the same flavour; a few removes it. Portuguese makes the same distinction with um pouco de or uns poucos / umas poucas:

Pouco alone = not enough. Um pouco de = some, a bit. The presence or absence of um flips the polarity.

Pouco as an adverb — invariable

The diminutive pouquinho / pouquinha is a thoroughly PT-PT softener. It means a tiny bit, often with affection or politeness:

Bastante / bastantes — enough, quite a lot, plenty

Bastante is the quantifier with split personality. Depending on context, it can mean enough (the sufficient amount) or quite a lot of / plenty of (a generous amount — more than enough). Native speakers navigate the two readings by context; learners need to be aware that the word genuinely is ambiguous in isolation.

Inflection: no gender, but a plural

Unusually, bastante does not inflect for gender — it is the same for masculine and feminine nouns — but it does take a plural -s. This mixed behaviour is a PT-PT peculiarity worth memorising.

The enough vs quite a lot ambiguity

Which reading wins? Context. In an exchange like — Precisas de ajuda para pagar? — Não, tenho bastante dinheiro, it means enough. Said out of the blue about your financial situation, it leans toward a lot. Where precision matters, PT-PT speakers disambiguate:

• o suficiente or suficiente for enough unambiguously
• muito / bastante alongside an intensifier for a lot unambiguously

Bastante as an adverb — invariable and common

In PT-PT, bastante as an adverb often translates English quite, rather, fairly. It is a register-neutral softener — less casual than muito but not stiff.

Tanto / tanta / tantos / tantas — so much, so many

Tanto inflects fully for gender and number. Its core meaning is so much / so many — usually with exclamatory or comparative force.

Exclamatory tanto

Comparative tanto... como / quanto — as much/many as

Tanto is also the equative comparative: tanto X como Y means as much/many X as Y. PT-PT predominantly uses como; quanto is also correct and slightly more formal.

Tanto as an adverb — invariable

Um tanto — somewhat, rather

A fossilised expression in which tanto acts almost as a degree adverb:

Vários / várias — several, various

Vário is essentially plural-only as a determiner in modern PT-PT. The singular form exists (um pensamento vário) but is literary and rare. As a plural determiner, it means several — a middling quantity, more than two or three but less than many.

Vários is pre-nominal only in the several meaning. Placing it after the noun (livros vários) shifts the sense toward varied, diverse — a post-nominal adjective, not a determiner.

Diversos / diversas — several, various (slightly more formal)

Diversos overlaps semantically with vários but has a slightly more formal or written flavour. In journalism, academic prose, and careful speech, diversos sounds polished; in everyday conversation vários is more common.

Like vários, post-nominal diversos shifts toward diverse, varied:

Numerosos / numerosas — numerous (formal)

Numerosos is firmly formal — newspapers, speeches, academic writing. In everyday speech, muitos covers this ground. But the word is common in reading material and worth knowing.

Alguns / algumas — some (limited plural)

Treated in depth on the indefinite determiners page, but worth a quick note here: alguns is the plural equivalent of muitos at the low end — a small but non-trivial number, more than poucos but clearly fewer than muitos.

Alguns does not apply to mass nouns as a determiner in the English sense of some water. For that, Portuguese uses bare nouns, um pouco de, or alguma in the singular (see partitive constructions).

Demais — too much, too many, the rest (invariable)

Demais is a compact word doing double duty. It is invariable (no agreement) and covers two distinct meanings.

Demais = too much / too many

Note the position: demais comes after the noun, unlike most other quantifiers. Comida demais not demais comida.

Os demais / as demais = the rest, the others

With the definite article, demais means the others, the rest:

This use is more formal. In everyday speech, os outros is more common.

Todo(s), cada, algum, nenhum — a brief recap

These are covered fully on the indefinite determiners page. A one-line reminder of each:

• todos os / todas as
  • plural noun = all the (todos os alunos)
• todo o / toda a
  • singular noun = the whole (toda a noite)
• cada (invariable) + singular noun = each (cada pessoa)
• algum/a/ns/as = some (positive and interrogative contexts)
• nenhum/a = no, none (negative contexts)

They belong to the same broad family as the quantifiers on this page, but with universal or existential semantics rather than quantity-of-amount.

Position summary

All of the quantifiers covered here — except demais — are strictly pre-nominal when functioning as determiners. Any post-nominal use shifts them into adjective territory with a different meaning.

Register notes

• (informal, spoken) Muito, pouco, bastante, tanto, vários are register-neutral and dominate everyday speech.
• (formal, written) Diversos replaces vários; numerosos replaces muitos in prestige writing; os demais replaces os outros.
• (emphatic) Tanto adds exclamatory weight; bastantes (plural) emphasises the plurality.

Common Mistakes

Key Takeaways

• Muito and pouco work as both determiners (agreeing: muita água, poucos amigos) and adverbs (invariable: muito bonita, pouco provável). Identify the role first, then decide whether to agree.
• Portuguese collapses English much and many into one word — muito — and uses agreement to distinguish mass from count: muito tempo vs muitos dias.
• Bastante is anomalous: no gender agreement, but does take a plural -s. Meaning ranges from enough to quite a lot — use suficiente for unambiguous enough.
• Tanto inflects fully and covers so much/many as well as the equative comparative tanto... como (= as much/many as).
• Vários and diversos mean several (plural only as determiners); diversos is a touch more formal.
• Numerosos is firmly formal — reserve it for writing and replace with muitos in speech.
• Demais is invariable and post-nominal: comida demais (too much food), os demais (the rest).
• Post-nominal placement of vários, diversos, numerosos converts them from quantifiers (several) to adjectives (varied, diverse).