O tom está sério.

The tone is serious.

Breakdown of O tom está sério.

• estar: to be
• sério: serious
• o tom: the tone

Questions & Answers about O tom está sério.

Why is it o tom and not just tom?

In Portuguese, the definite article is used much more often than in English. O tom literally means the tone, and in many contexts Portuguese prefers the article where English might not.

So O tom está sério sounds natural for The tone is serious or even The tone sounds serious, depending on context.

If you said just tom by itself, it would usually sound incomplete here.

Why is it está instead of é?

This is a very common question because Portuguese has two verbs meaning to be: ser and estar.

Here, está is used because the sentence describes the tone as being in a certain state or coming across in a certain way at that moment.

• O tom está sério = the tone is serious right now / in this situation
• O tom é sério would sound more like a permanent or defining characteristic, which is less natural in most cases

With things like mood, tone, appearance, and temporary impression, estar is often the better choice.

What exactly does tom mean here?

Tom usually means tone. In this sentence, it refers to the tone of voice, tone of writing, or tone of a message.

For example, it could describe:

• how someone is speaking
• the mood of a text
• the attitude behind a statement

It can also mean shade or hue in color contexts, but that is not the meaning here.