Que vs O Que (What)

English uses one word — "what" — for several jobs that Brazilian Portuguese splits across three written forms: que, o que, and o quê. They are pronounced almost identically, which is exactly why the spelling rules matter: choosing the wrong form (or dropping the circumflex) is a genuine error, not a typo. This page gives you a clean decision rule, plus the bonus use of que in exclamations.

que + noun: "what / which" before a noun

When "what" or "which" comes directly before a noun, use bare que (no o, no accent). It works like an adjective attached to the noun.

So the test is simple: if a noun follows immediately, use que. Que livro? Que ônibus? Que filme? In casual speech you may also hear qual here (Qual cor?), which leans toward "which one of a set" — see the Qual / Quais page for that distinction. For asking "what + noun" out of the blue, que is the standard choice.

o que: standalone "what"

When "what" stands alone — as the subject or object, with no noun attached — use o que (two words, no accent). This is the most common way to ask "what?" in a full sentence.

Notice there is no noun after o que — it refers to an unknown "thing." This is the dividing line from the previous section: Que cor? (noun follows → que) versus O que é a sua cor favorita? (standalone → o que). And as always, statement word order follows: O que você quer? is literally "What you want?", with no inversion and no "do."

The optional é que loves to attach here:

o quê: sentence-final and isolated "what"

Here is the form that trips everyone up. When "what" lands at the very end of an utterance, or stands completely alone as a one-word question, it takes the circumflex: o quê. The accent marks the stressed, final position.

Compare the front-versus-end pair to feel the rule:

The two sentences mean essentially the same thing; the end-placed version is more conversational, often surprised or asking for a repeat. The grammar rule is purely about position: front → o que; final or isolated → o quê. This is the single most important accent rule on this page, and it is non-negotiable in correct writing.

que as an exclamation: "How / What a …!"

Outside of questions, que is also the workhorse of exclamations, equivalent to English "how …!" or "what a …!" It stays unaccented here.

You can intensify it with mais or tão: Que dia mais lindo! ("What a beautiful day!"). This exclamatory que is everywhere in everyday (informal) speech and is one of the most natural-sounding building blocks once you have it.

Don't confuse it with qual

A frequent source of error: English "what" sometimes maps to Portuguese qual (which), not o que — especially when choosing from an implied set or asking for a specific identifying detail. What is your name? is idiomatically Qual é o seu nome? (not O que é o seu nome?), and What is your phone number? is Qual é o seu telefone? The Qual / Quais page covers this fully; just keep it on your radar so you do not reach for o que every time you see English "what."

Common Mistakes

Key Takeaways

• que + noun = "what/which" before a noun: Que horas? Que cor? (no o, no accent).
• o que = standalone "what," front of a clause: O que você quer? O que é isso? (two words, no accent).
• o quê = sentence-final or isolated "what": Você quer o quê? / O quê?! (circumflex on the final, stressed word).
• que …! = exclamation "how/what a …!": Que lindo!
• English "what" sometimes equals qual, not o que — especially Qual é o seu nome?