Я торгуюся з продавцем за кілограм моркви.

Торгуюся means I bargain / I haggle / I negotiate, usually about price or terms.

It does not simply mean I buy. It also differs from торгую from торгувати, which more often means to trade, to sell, or to deal in something. So:

• торгувати = trade, sell
• торгуватися = bargain, haggle

The -ся is the reflexive marker, but in many verbs it is just part of the verb’s normal dictionary form and changes the meaning.

Here, торгуватися is the standard verb for to bargain / haggle. You should learn it as a whole verb, not as торгувати plus a separately translatable -ся.

In this sentence, торгуюся is the 1st person singular present form: I bargain / I am bargaining.

It can mean either, depending on context.

Ukrainian present tense often covers both:

• I bargain
• I am bargaining

In this sentence, the most natural English translation is usually the ongoing one: I am bargaining with the seller...

Because the preposition з meaning with normally takes the instrumental case.

The base form is продавець = seller.
After з, it becomes продавцем.

So:

• продавець = seller
• з продавцем = with the seller / with a seller

With торгуватися, the preposition за can introduce the thing you are bargaining for or over.

So за кілограм моркви means something like:

• for a kilogram of carrots
• over a kilogram of carrots

The idea is that the speaker is negotiating the deal concerning that amount of carrots, usually the price.

It is in the accusative case, but for many masculine inanimate nouns, the accusative looks the same as the nominative.

So in this sentence:

• nominative: кілограм
• accusative: кілограм

The case is there grammatically, but the form happens to stay the same.

Because after a word of quantity or measure such as кілограм, Ukrainian normally uses the genitive for the thing being measured.

So:

• кілограм моркви = a kilogram of carrots
• літр молока = a liter of milk
• чашка чаю = a cup of tea

Here, моркви is the genitive form used after кілограм.

Ukrainian often treats foods and produce as mass nouns in contexts like this.

So морква can mean carrot in a general material/substance sense, not necessarily one individual carrot. That is why кілограм моркви is natural Ukrainian.

English often prefers a kilo of carrots, but Ukrainian commonly uses the singular mass-noun pattern here.

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

That means продавцем can mean:

• with a seller
• with the seller

Context tells you which is meant. If needed, Ukrainian can add other words for clarity, but it does not use articles the way English does.

Yes. Very often, Ukrainian drops subject pronouns because the verb ending already shows the person.

Торгуюся з продавцем за кілограм моркви is a perfectly natural sentence.

Including Я is also fine; it can add emphasis or simply make the sentence a bit clearer.

Yes. Ukrainian word order is fairly flexible because the cases show how the words relate to each other.

This sentence has a neutral, natural order:

• Я торгуюся з продавцем за кілограм моркви.

But you could also move parts around for emphasis, for example:

• З продавцем я торгуюся за кілограм моркви.

That puts more focus on with the seller.

Yes, in less formal speech and writing, many -ся verbs are shortened to -сь after a vowel, so торгуюсь can occur.

However, торгуюся is the standard full form and the best version for learners to use.

So:

• standard: торгуюся
• colloquial/shortened: торгуюсь