Roaming je drahý.

Yes. Je is the 3rd person singular form of the verb být (to be), so here it means is.

• já jsem = I am
• ty jsi = you are
• on/ona/ono je = he/she/it is

So Roaming je drahý. literally means Roaming is expensive.

Because drahý is an adjective, and in Czech adjectives change their form to match the noun in gender, number, and case.

Here, roaming is treated as a masculine singular noun, so the adjective takes the matching form drahý.

Compare:

• ten roaming je drahý = that roaming is expensive
• ta služba je drahá = that service is expensive
• to připojení je drahé = that connection is expensive

So the ending -ý tells you the adjective agrees with a masculine singular noun.

It is a borrowed word from English, but it is commonly used in Czech, especially in telecom and travel contexts.

Even though it comes from English, Czech still treats it like a regular noun in grammar. That means it can take Czech adjective agreement and can be declined in some contexts.

So in everyday Czech, roaming is perfectly normal.

It is normally treated as masculine inanimate.

That is why you get:

• ten roaming
• roaming je drahý

This is common with many borrowed nouns ending in a consonant: they are often treated as masculine.

In Czech, grammatical gender is not decided by whether something is abstract or concrete. It depends on how the noun is classified in the language.

Even though roaming is an abstract service or concept, it is still grammatically masculine, not neuter. So the correct adjective form is drahý, not drahé.

If the noun were neuter, then drahé would be right. For example:

• připojení je drahé = the connection is expensive

But with roaming, Czech uses masculine agreement:

• roaming je drahý

Yes — and in fact, roaming would usually be written with a lowercase r in normal Czech, unless it appears at the beginning of a sentence.

So the usual spelling would be:

• Roaming je drahý. at the start of a sentence
• Ten roaming je drahý. in the middle of a sentence

The capital letter here is only because it is the first word of the sentence.

Yes. Czech word order is fairly flexible, although the basic neutral order here is:

• Roaming je drahý.

You can also change the order for emphasis:

• Drahý je roaming. = It’s roaming that is expensive.
• Je drahý, ten roaming. = That roaming is expensive.

But for a learner, Roaming je drahý. is the most natural and safest basic version.

Roughly: DRAH-hee

A few details:

• dra- sounds like drah
• h is clearly pronounced
• ý is a long ee sound

So drahý sounds approximately like DRAH-hee, with stress on the first syllable, as usual in Czech.

It can mean expensive, but it can also mean dear in the emotional sense, depending on context.

For example:

• To je drahé. = That is expensive.
• Můj drahý příteli = My dear friend

In Roaming je drahý, the meaning is clearly expensive, not dear.

Yes. That means Roaming is very expensive or Roaming is too expensive, depending on context.

• moc drahý often means very expensive in everyday speech
• sometimes it can feel like too expensive

Other useful variations:

• Roaming je velmi drahý. = Roaming is very expensive.
• Roaming je příliš drahý. = Roaming is too expensive.

So moc drahý is very common and natural in spoken Czech.

No. Czech does not use articles like a or the.

So where English says:

• Roaming is expensive.

Czech simply says:

• Roaming je drahý.

If you want to make it more specific, Czech uses other words, such as demonstratives:

• Ten roaming je drahý. = That roaming is expensive.

But there is no direct article system like in English.