لطفا خیلی آهسته صحبت کن.

A natural word-by-word breakdown is:

• لطفا = please
• خیلی = very
• آهسته = slowly
• صحبت کن = speak / talk

So the structure is basically please + very slowly + speak.

A more literal English order would be Please very slowly speak, but in natural English we say Please speak very slowly.

Because Persian usually puts the verb at the end.

So:

• لطفا خیلی آهسته صحبت کن
• literally: Please very slowly speak

This is completely normal in Farsi. English speakers often expect the verb earlier, but Persian is commonly subject-object-verb or, in short commands like this, just adverb + verb at the end.

کن is the imperative form of کردن (to do).

The expression صحبت کردن literally means to do speaking, and together it means to speak / to talk.

So:

• صحبت کردن = to speak
• صحبت کن = speak!

This is very common in Persian: a noun plus کردن makes a verb-like expression.

Persian often uses what learners call compound verbs. Instead of one simple verb, Persian frequently combines:

• a noun/adjective/etc.
• with a light verb like کردن, زدن, شدن, etc.

Here:

• صحبت = speech / conversation
• کردن = to do
• صحبت کردن = to speak

This pattern is extremely common, so getting used to compound verbs is important for learning Persian.

کن is informal singular imperative. You use it with:

• a friend
• a child
• someone you know well
• casual situations

If you want to be polite or formal, use:

• لطفا خیلی آهسته صحبت کنید

Here کنید is the polite/plural imperative form.

So even though لطفا means please, the form کن still sounds informal.

Not necessarily. It is possible, but it depends on the situation.

• لطفا ... کن = polite in tone, but still informal
• لطفا ... کنید = more respectful / formal

So if you are talking to a friend, لطفا خیلی آهسته صحبت کن is fine. If you are talking to a stranger, teacher, older person, or someone in a formal context, لطفا خیلی آهسته صحبت کنید is usually better.

خیلی means very. It intensifies آهسته.

So:

• آهسته = slowly
• خیلی آهسته = very slowly

This works much like English:

• slowly
• very slowly

Yes. آهسته can also carry the sense of:

• gently
• softly
• sometimes quietly, depending on context

In this sentence, because it is used with صحبت کردن (to speak), the intended meaning is usually slowly. But in some contexts it can overlap a bit with softly.

That is why context matters.

A common pronunciation guide is:

lotfan kheyli âheste sohbat kon

More roughly for an English speaker:

• لطفا = lot-fan
• خیلی = khey-lee
• آهسته = aa-hes-te or â-hes-te
• صحبت = soh-bat
• کن = kon

If you want the whole sentence smoothly:

lotfan kheyli âheste sohbat kon

Yes, often you can.

For example:

• لطفا خیلی آهسته حرف بزن
• Please speak very slowly

Both are understandable. The difference is mostly about style:

• صحبت کردن can sound a bit more neutral or slightly more formal
• حرف زدن is very common and conversational

Both are useful, and you will hear both in real life.

Sometimes, yes.

• خیلی آهسته = very slowly
• آهسته‌تر = more slowly

If someone is already speaking and you want them to reduce speed, آهسته‌تر صحبت کن or آهسته‌تر صحبت کنید can sound very natural:

• لطفا آهسته‌تر صحبت کنید = Please speak more slowly

Your original sentence is correct, but آهسته‌تر is also extremely common in this situation.

Yes, but the sentence becomes more direct:

• خیلی آهسته صحبت کن = Speak very slowly

This can sound like a straightforward command. Adding لطفا softens it:

• لطفا خیلی آهسته صحبت کن = Please speak very slowly

So لطفا is optional grammatically, but useful socially.

You may also see it written as لطفاً with a small diacritic at the end. Both represent please.

In everyday modern typing, many people just write:

• لطفا

That is very common and normal.

No. In Persian commands, the subject is usually omitted, just like in English:

• Speak slowly
• صحبت کن

The you is understood from the imperative form. Here کن already tells you the command is addressed to you (informal singular).

The most natural polite version is:

• لطفا خیلی آهسته صحبت کنید

This is the version you would normally use with:

• strangers
• teachers
• elders
• customer-service situations
• formal settings

So a useful pair to remember is:

• صحبت کن = informal
• صحبت کنید = formal/polite