Konfirmu la liveradreson.

Because -u is the verb ending used for a command, request, or instruction in Esperanto.

• konfirmi = to confirm
• konfirmu = confirm

So Konfirmu is the command form, like English Confirm.

In Esperanto, commands usually leave out the subject, just like English often does.

• Konfirmu la liveradreson. = Confirm the delivery address.
• The implied subject is you.

If you wanted to include it for emphasis, you could say Vi konfirmu la liveradreson, but that is less neutral and not the usual way to give a simple instruction.

La is the definite article, meaning the.

So la liveradreson means the delivery address, referring to a specific address that is already known in the situation.

Esperanto has only one article, la, and it does not change for gender, number, or case. The -n on the end belongs to the noun phrase because it is the direct object, not because la changes.

The -n marks the direct object in Esperanto.

Here, the thing being confirmed is the delivery address, so that noun gets the accusative ending:

• liveradreso = delivery address
• liveradreson = delivery address as the direct object

Since konfirmi is a transitive verb, the thing you confirm takes -n.

Yes. Esperanto often forms compounds by joining roots into one word.

• liver- relates to delivery
• adreso = address
• liveradreso = delivery address

Then the direct-object ending is added:

• liveradreso
• liveradreson

The main idea of a compound is usually in the last part, so this is a kind of address specifically connected with delivery.

In Esperanto, stress almost always falls on the second-to-last syllable.

So:

• kon-fir-MU
• la
• li-ver-a-dre-SON if spoken slowly by syllables, but with the normal penultimate stress rule the stress is on DRE in liveradreson: li-ver-a-DRE-son

A simpler way to remember it is: stress the next-to-last syllable of each word.

Yes, but Konfirmu la liveradreson is the most straightforward and natural order for a command.

Because Esperanto marks the direct object with -n, word order is more flexible than in English. For example, La liveradreson konfirmu is still understandable, but it sounds more marked or emphatic.

For a normal instruction, Konfirmu la liveradreson is the best choice.

The dictionary form is konfirmi, which is the infinitive meaning to confirm.

Esperanto dictionary forms for verbs end in -i:

• konfirmi = to confirm
• konfirmas = confirms / is confirming
• konfirmis = confirmed
• konfirmos = will confirm
• konfirmu = confirm

So when learning vocabulary, you would usually memorize konfirmi.

Grammatically, you might see article-less nouns in some contexts, but here la is the normal and expected choice if a specific delivery address is meant.

Without la, the phrase would sound less definite and less natural in many ordinary situations. Since an instruction like this usually refers to one known address in a form or order, la liveradreson is the most natural wording.

Not necessarily. The -u form covers several ideas in Esperanto, including:

• commands
• requests
• instructions
• invitations
• wishes

So Konfirmu la liveradreson can sound like a direct command, but in many real situations it is simply a neutral instruction, like a button label or form prompt.