Суперник готовий.

In Ukrainian, the verb to be is usually omitted in the present tense.

So:

• Суперник готовий. = The opponent is ready.

Literally, Ukrainian often just says Opponent ready where English requires is.

If you want past or future, forms of бути appear:

• Суперник був готовий. = The opponent was ready.
• Суперник буде готовий. = The opponent will be ready.

Готовий is an adjective meaning ready.

In this sentence it is used predicatively, which means it describes the subject after an implied is:

• Суперник готовий. = The opponent is ready.

This is similar to English ready in He is ready. It is not an adverb.

The ending -ий shows that готовий is masculine singular nominative.

It agrees with суперник, which is also masculine singular.

This kind of agreement is very important in Ukrainian. The adjective changes depending on the noun:

• суперник готовий = the male opponent is ready
• суперниця готова = the female opponent is ready
• суперники готові = the opponents are ready

So the -ий ending is there because the subject is masculine singular.

Yes, суперник is a masculine noun.

For a female opponent, Ukrainian normally uses суперниця.

So:

• Суперник готовий. = The male opponent is ready.
• Суперниця готова. = The female opponent is ready.

Notice that the adjective changes too:

• masculine: готовий
• feminine: готова

Here суперник is in the nominative case, because it is the subject of the sentence.

The sentence is structured like:

• Суперник = subject
• готовий = predicate adjective

So this is the basic dictionary form of суперник.

Ukrainian has no articles, so there is no separate word for a, an, or the.

That means Суперник готовий could mean:

• The opponent is ready
• An opponent is ready
• Opponent is ready

The exact interpretation depends on context.

English forces you to choose an article, but Ukrainian usually leaves that to context.

Yes. Ukrainian word order is fairly flexible, though the neutral order here is:

• Суперник готовий.

This sounds like a straightforward statement: The opponent is ready.

You may also see other orders for emphasis, but they can sound marked or poetic depending on context. For a beginner, the safest choice is to keep:

• Суперник готовий.

So yes, word order can change, but this version is the most neutral and natural to learn first.

Usually, yes, but it can also extend to meanings like prepared or sometimes willing, depending on context.

For example:

• Я готовий. = I am ready.
• Я готовий допомогти. = I am ready/prepared to help.

In Суперник готовий, the natural meaning is simply that the opponent is ready.

Normally, no.

You might know є as a form related to is/there is, but in ordinary present-tense sentences like this, Ukrainian usually does not use it:

• natural: Суперник готовий.
• not the normal beginner pattern: Суперник є готовий.

So for a simple sentence like this, leave it out.

You need to change both the noun and the adjective:

• singular: Суперник готовий. = The opponent is ready.
• plural: Суперники готові. = The opponents are ready.

Notice the agreement:

• суперник → суперники
• готовий → готові

That is a very common Ukrainian pattern: adjectives change to match number as well as gender.