Банк знайшов підозрілу операцію.

Ukrainian has no articles. So Банк знайшов підозрілу операцію can be understood from context as The bank found a suspicious transaction.

English uses articles all the time, but Ukrainian usually leaves definiteness and indefiniteness to context, word order, or extra words if needed.

Because операцію is in the accusative case, which is used here for the direct object of the verb знайшов (found).

• Nominative: операція = operation / transaction
• Accusative: операцію = operation / transaction as the thing being found

So:

• Операція підозріла. = The transaction is suspicious.
• Банк знайшов операцію. = The bank found a transaction.

Adjectives in Ukrainian must agree with the noun they describe in:

• gender
• number
• case

Here, операцію is:

• feminine
• singular
• accusative

So the adjective must also be feminine singular accusative:

• nominative: підозріла операція
• accusative: підозрілу операцію

That is why both words change together.

In the past tense, Ukrainian verbs agree with the subject in gender and number.

The subject here is банк, which is a masculine singular noun, so the verb is:

• банк знайшов = masculine singular

Compare:

• Компанія знайшла... = The company found...
• Банки знайшли... = The banks found...

Even though a bank is an institution, grammatically it is still a masculine singular noun, so the verb matches that.

The dictionary form is знайти = to find.

Знайшов is the past masculine singular form:

• знайти = to find
• знайшов = found

A learner often needs to work backward from the past-tense form to the infinitive, so this is a very normal question.

Знайшов comes from знайти, which is perfective.

That means it presents the action as completed: the bank successfully found/detected the transaction.

So this sentence implies a result:

• Банк знайшов підозрілу операцію. = the bank found it

The imperfective partner is знаходити. Its past form would be знаходив, which usually suggests an ongoing, repeated, or process-oriented action rather than one completed discovery.

In this sentence, the perfective form is natural because the point is the completed result.

In banking and finance, операція very often means transaction.

So although the literal cognate is operation, in this sentence the most natural English meaning is usually:

• suspicious transaction

This is a good example of a word whose most natural translation depends on context.

The neutral word order here is subject + verb + object:

• Банк знайшов підозрілу операцію.

But Ukrainian word order is fairly flexible because case endings show grammatical roles.

For example, you could also say:

• Підозрілу операцію знайшов банк.

That is still understandable, but it changes the focus or emphasis. It may sound like:

• It was the bank that found the suspicious transaction, or
• The suspicious transaction was what the bank found

So yes, the word order can change, but not randomly: it affects emphasis and style.

Usually, the most natural order is:

• підозрілу операцію

Putting the adjective after the noun is much less neutral and can sound literary, marked, or unusual depending on context.

So for everyday standard Ukrainian, a learner should normally keep the adjective before the noun here.

Often, yes.

• знайшов = found
• виявив = detected / identified / discovered

In official, banking, or compliance language, виявив підозрілу операцію can sound especially natural, because banks often detect suspicious transactions rather than physically find them.

Still, знайшов is understandable and acceptable. It just sounds a bit more general.

Because Ukrainian, like English, does not need a pronoun when the noun itself is already present.

The sentence already has:

• subject: Банк
• object: підозрілу операцію

So there is no reason to add a separate it-type word.

In fact, adding extra pronouns where they are not needed is a common beginner mistake when translating too directly from English.