Заявка онлайн.

Заявка usually means application, request, or submission, depending on context.

In a phrase like Заявка онлайн, it often means something like:

• online application
• apply online
• submit a request online

So the exact English translation depends on where you see it: a website button, a form heading, an ad, and so on.

Because this kind of short phrase is very common in Ukrainian headings, labels, buttons, and advertising language.

Ukrainian often omits words that are easy to understand from context. So instead of a full sentence, you may just get a compact phrase.

For example, Заявка онлайн can function like:

• Online application
• Application online
• Apply online

In natural English, we often need to choose a fuller phrase, but Ukrainian can sound perfectly normal with just these two words in this kind of context.

Not really in the strict grammar-book sense. It is more like a caption, heading, menu item, or advertising phrase.

A full sentence might be something like:

• Подайте заявку онлайн. — Submit an application online.
• Заявку можна подати онлайн. — The application can be submitted online.

But in interface language or marketing, Заявка онлайн is completely normal as a short standalone phrase.

Here онлайн acts as an indeclinable modifier, something like online in English.

It can behave a bit like an adjective or adverb depending on the structure, but in short modern phrases like this, it is often best to think of it simply as a borrowed word meaning online / via the internet.

It does not change its ending:

• онлайн
• not something like онлайна, онлайном, etc.

Yes, very often.

Онлайн-заявка is probably the more obvious way to say online application as a single compound-style expression.

There is a slight difference in feel:

• онлайн-заявка = a more tightly connected noun phrase, like online application
• заявка онлайн = more like a slogan, label, or emphasis structure, something you might see on a button or in an ad

So both are possible, but they may appear in slightly different contexts.

Заявка is in the nominative singular form.

That is the basic dictionary form of the noun:

• заявка — nominative singular
• it is a feminine noun

In this short phrase, it is simply naming the thing: application / request.

If it appeared in a full sentence, the case might change. For example:

• Подати заявку — to submit an application
  Here заявку is accusative.

So in Заявка онлайн, you are seeing the base form.

A simple pronunciation guide is:

• заявка — za-YAV-ka
• онлайн — on-LINE

Stress:

• зая́вка
• онла́йн

A rough full pronunciation in Latin letters would be:

zayavka onlayn

It is a borrowed word, originally from English, but it is very common in modern Ukrainian.

You will often see it in:

• tech language
• websites
• ads
• business communication
• service forms

So even though it comes from English, it is fully normal in contemporary Ukrainian usage.

It sounds most natural in website, business, service, or advertising language.

It is not especially casual or slangy. It is more like practical modern UI language.

You might see it:

• on a bank website
• on an insurance page
• on a delivery or service form
• as a button or headline

In ordinary conversation, people would usually use a fuller sentence instead.

Usually not as the main interpretation.

Most people would understand it as something like:

• online application
• application online
• submit a request online

If you specifically wanted to say the application is online, you would normally use a fuller sentence, for example:

• Заявка є онлайн
• or more naturally, a different wording depending on context

So in real life, Заявка онлайн is usually read as a short label, not as a statement about location.

That depends on where the phrase appears.

Possible translations include:

• Online application
• Apply online
• Submit an application online
• Online request

If it is a button or form title, Online application is often best.
If it is a call to action, Apply online may sound more natural in English.