Opróżnij butelkę przed recyklingiem.

Opróżnij is the imperative form of the verb opróżnić, meaning empty in the sense of make empty.

More specifically, it is:

• 2nd person singular imperative
• used for telling one person to do something
• based on the perfective verb opróżnić

So grammatically, it means something like empty it!

This is a question of aspect, which is very important in Polish.

• opróżnić = perfective → to empty something completely, as a finished action
• opróżniać = imperfective → to be emptying, or to empty repeatedly/habitually

In instructions like this, Polish often uses the perfective imperative because the goal is a completed result: the bottle should end up empty.

So:

• Opróżnij butelkę = Empty the bottle / make sure it becomes empty
• Opróżniaj butelkę would sound more like empty the bottle regularly or keep emptying the bottle, which is not what this instruction means

Because butelka is the dictionary form nominative, but here the word is the direct object of the verb opróżnij, so it must be in the accusative case.

• nominative: butelka = bottle
• accusative: butelkę = bottle, as the thing being emptied

This is very common with feminine nouns ending in -a:

• książka → książkę
• torba → torbę
• butelka → butelkę

Because the preposition przed requires the instrumental case here.

So:

• recykling = recycling
• recyklingiem = instrumental singular

In this sentence, przed means before, so:

• przed recyklingiem = before recycling

A useful thing to remember is that przed can mean:

• before in time
• in front of in space

In both meanings, it normally takes the instrumental.

Yes. Recykling is a normal modern Polish word, borrowed from English recycling and fully integrated into Polish grammar.

That means it:

• has Polish pronunciation
• declines like a Polish noun
• can appear in different cases, such as recyklingiem

So even though it looks familiar to an English speaker, it behaves like a regular Polish noun in the sentence.

It is understood, not stated.

Polish often leaves out subject pronouns when they are clear from the verb form. In an imperative, the verb itself already tells you that someone is being addressed.

So:

• Opróżnij already means you empty! or simply empty!

Adding ty would usually be unnecessary:

• Ty opróżnij butelkę is possible, but it adds emphasis, like you empty the bottle

Grammatically, opróżnij is the singular imperative, which is the same form you would use when speaking directly to one person informally.

However, on instructions, labels, and public notices, Polish often uses this kind of direct imperative very naturally. It does not automatically sound rude.

So on packaging or signage, Opróżnij butelkę przed recyklingiem is perfectly normal.

A more formal or less direct version would be:

• Proszę opróżnić butelkę przed recyklingiem.

Because Polish has no articles.

There is no direct equivalent of English a/an or the in normal Polish grammar. Whether something is a bottle or the bottle is understood from context.

So butelkę can mean:

• a bottle
• the bottle

In this sentence, English would normally say the bottle, because the instruction is about the specific bottle being handled. But Polish does not need a separate word for that.

Yes. Polish word order is more flexible than English because case endings show what each word is doing.

The sentence as given:

• Opróżnij butelkę przed recyklingiem.

is a very natural instruction.

But you could also say:

• Przed recyklingiem opróżnij butelkę.

This puts more focus on before recycling. The meaning stays basically the same.

Because butelkę is clearly in the accusative, Polish does not need a fixed English-style order to show that it is the object.