Questions & Answers about Eu quero dizer algo.
In Portuguese, the subject pronoun is often optional because the verb ending already shows who the subject is.
- Eu quero dizer algo. = I want to say something.
- Quero dizer algo. = I want to say something. (also correct and very natural)
Both are correct.
Using Eu can add a bit of emphasis on I (like “I want to say something”), or can be used to avoid ambiguity in longer contexts. In a short sentence like this, Eu is not required.
Because the meanings are different:
- Eu quero dizer algo. = I want to say something. (expresses a desire or intention)
- Eu digo algo. = I say something. (a simple statement of fact in the present; sounds odd on its own)
Quero + infinitive (e.g. quero dizer, quero comer) means want to do something.
If you just say Eu digo algo, it sounds like a description of a habit or a current action, not a request to speak.
In a real situation where you want to interrupt or get permission to speak, you would typically say:
- Quero dizer uma coisa.
- Eu queria dizer uma coisa. (more polite/softened: “I wanted to say something.”)