Не ставь кружку с кипятком на край стола.

Ставь is the imperative singular of ставить, meaning put / place / set (upright).

So Не ставь... means Don’t put... when speaking to one person informally.

Related forms:

• ставить = imperfective infinitive
• ставь = tell one person put!
• не ставь = don’t put!
• ставьте = tell several people, or one person politely

This verb is especially natural for things that are placed standing upright, like a mug, bottle, or glass.

This is a very common learner question because Russian negatives with imperatives can be tricky.

In Russian, negative commands often use the imperfective verb:

• Не ставь кружку... = Don’t put the mug...

Why imperfective here? Because the speaker is telling someone not to do the action at all. It is a general prohibition.

Compare:

• Не ставь кружку на край стола. = Don’t put the mug on the edge of the table.
• Поставь кружку на стол. = Put the mug on the table.

The perfective imperative is more common for a single completed positive action, while the imperfective is very common in negative instructions.

Кружку is the accusative singular of кружка.

The verb ставить takes a direct object, and direct objects are often in the accusative case.

So:

• кружка = mug, mug-shaped cup (dictionary form, nominative)
• ставь кружку = put the mug (accusative)

This is a regular feminine noun pattern:

• nominative: кружка
• accusative: кружку

Both can be translated as cup, but they are not quite the same.

• кружка = a mug, usually larger, often cylindrical, often with thicker walls
• чашка = a cup, usually smaller, often a teacup or coffee cup

So in this sentence, кружка suggests something like a mug of boiling water, which makes sense in a warning.

Кипятком is the instrumental singular of кипяток.

The phrase кружка с кипятком literally means:

• a mug with boiling water

After с meaning with, Russian often uses the instrumental case:

• с чаем = with tea
• с водой = with water
• с кипятком = with boiling water

So:

• кипяток = boiling water
• кипятком = with boiling water

Russian has no articles like a / an / the.

So:

• кружку can mean a mug or the mug
• край стола can mean the edge of the table or an edge of a table

The exact meaning comes from context.

In this sentence, English naturally uses the:

• Don’t put the mug with boiling water on the edge of the table

But Russian simply does not need an article.

Because this sentence expresses motion toward a destination.

Russian uses:

• на + accusative for movement onto / to
• на + prepositional for location on

Here the mug is being moved to the edge, so:

• на край = onto the edge / to the edge

Compare:

• Не ставь кружку на край стола. = Don’t put the mug on the edge of the table.
• Кружка стоит на крае стола. = The mug is standing on the edge of the table.

So:

• край = accusative after motion
• крае = prepositional after location

Because край often takes a noun in the genitive to show the edge of what.

So:

• край стола = the edge of the table
• literally: edge of table

This is a very common Russian pattern:

• центр города = the center of the city
• дверь комнаты = the door of the room
• начало фильма = the beginning of the film

So стола is the genitive singular of стол.

In normal interpretation, с кипятком describes кружку:

• кружку с кипятком = the mug with boiling water

That is the most natural reading.

Russian allows these noun + с phrases very naturally:

• бутылка с водой = bottle with water
• чашка с чаем = cup with tea
• тарелка с супом = plate/bowl with soup

So the warning is specifically about the mug containing boiling water, not just any mug.

Usually yes, that is the best translation.

Кипяток means boiling water or water that has just been boiled. It is a common everyday word.

Examples:

• налей кипяток = pour boiling water
• осторожно, здесь кипяток = careful, there’s boiling water here

So кружка с кипятком is a mug containing very hot water, which explains why the sentence sounds like a safety warning.

Yes. Russian word order is flexible, though different orders can sound more or less natural depending on emphasis.

The neutral version here is:

• Не ставь кружку с кипятком на край стола.

Possible variations:

• Кружку с кипятком не ставь на край стола.
  This emphasizes the mug with boiling water.
• На край стола не ставь кружку с кипятком.
  This emphasizes the edge of the table.

Even when the order changes, the cases help show the grammatical relationships.

Usually no, or at least it would change the image.

Russian distinguishes between:

• ставить = put something standing/upright
• класть / положить = put something lying down

A mug is normally placed upright, so ставить is the natural verb.

Compare:

• ставить кружку = put down a mug upright
• класть книгу = put down a book flat

So Не ставь кружку... sounds exactly right.

It is informal singular because of ставь.

You would say this:

• to one friend
• to a child
• to someone you address with ты

For polite or plural speech, use ставьте:

• Не ставьте кружку с кипятком на край стола.

So the sentence as written is directed to one person informally.

A few useful pronunciation points:

• не is short: nye
• ставь ends in a soft consonant: stavʹ
• кружку has stress on the first syllable: КРУЖ-ку
• кипятком has stress on the last syllable: ки-пят-КОМ
• край sounds like krai
• стола has stress on the last syllable: сто-ЛА

Approximate pronunciation: Nye stavʹ KRUZH-ku s keep-yat-KOM na krai sta-LA.

Also, in fast speech, с кипятком flows together smoothly, and the whole sentence sounds like a quick warning.