اگر خسته هستی، امشب در خانه آرام استراحت کن.

A word-by-word breakdown is:

• اگر = if
• خسته = tired
• هستی = you are
• امشب = tonight
• در خانه = at home / in the house
• آرام = calmly / quietly
• استراحت = rest
• کن = do (imperative form), used here to make استراحت کن = rest

So the sentence is built very literally as:

If tired you-are, tonight at home calmly rest-do.

Natural English would be something like If you’re tired, rest quietly at home tonight.

هستی is the second-person singular informal form of بودن in the present tense, meaning you are.

So:

• من هستم = I am
• تو هستی = you are
• او هست = he/she is

In this sentence, the subject تو is not stated, but it is understood from هستی.

So خسته هستی means you are tired.

In Persian, subject pronouns are often omitted when the verb already makes the subject clear.

Because هستی already means you are and کن is also an informal singular command, Persian does not need to say تو.

So:

• اگر تو خسته هستی... = correct, but more explicit
• اگر خسته هستی... = more natural in many contexts

This is very common in Persian.

خسته is an adjective meaning tired, and هستی is the copula are.

Together they mean:

• خسته هستی = you are tired

This works much like English be + adjective.

Other examples:

• خوشحال هستی = you are happy
• آماده هستی = you are ready
• بیمار هستی = you are sick

اگر means if and introduces a condition.

So:

• اگر خسته هستی = if you are tired

The sentence structure is:

• condition first: اگر خسته هستی
• result/command second: امشب در خانه آرام استراحت کن

This is a very normal Persian pattern, just like English:

• If you’re tired, rest at home tonight.

You can also sometimes move things around, but this order is the clearest and most common.

The comma separates the if-clause from the main clause:

• اگر خسته هستی، = if you are tired,
• امشب در خانه آرام استراحت کن. = rest quietly at home tonight.

In Persian writing, this comma is common and helps readability, especially with longer sentences. It is similar to English punctuation in sentences beginning with if.

امشب means tonight.

It is made from:

• ام = this / today’s
• شب = night

So it literally has the sense of this night, which in natural English is tonight.

Examples:

• امروز = today
• امشب = tonight
• امسال = this year

Persian word order is flexible, but not random. The sentence places time before location:

• امشب در خانه آرام استراحت کن
• literally: tonight at home quietly rest

This is a very natural order in Persian.

You could also hear variations like:

• در خانه امشب آرام استراحت کن
• امشب آرام در خانه استراحت کن

But the original sentence sounds smooth and standard.

In general, Persian often places:

1. time
2. place
3. manner
4. verb

before the final verb.

در خانه means at home or in the house/home.

• در = in / at
• خانه = house / home

In many contexts, Persian uses در where English may say either in or at, depending on what sounds natural.

So:

• در خانه هستم = I am at home
• در مدرسه = at school / in school
• در اتاق = in the room

Yes, sometimes Persian can omit در in everyday speech, depending on the expression.

For example, people may say:

• خانه بمان = stay home

But در خانه is very clear, standard, and natural here. It emphasizes the location a bit more explicitly as at home.

So in this sentence, در خانه is completely normal and good Persian.

Here آرام works like an adverb, meaning calmly, quietly, or peacefully.

So:

• آرام استراحت کن = rest calmly / rest quietly

Although آرام is often introduced as an adjective meaning calm or quiet, Persian commonly uses adjectives this way to express manner.

Compare:

• آرام حرف بزن = speak calmly / quietly
• آهسته راه برو = walk slowly

So آرام describes how the person should rest.

استراحت کن is a compound verb, which is extremely common in Persian.

It consists of:

• استراحت = rest
• کن = do! (imperative of کردن)

Together:

• استراحت کردن = to rest
• استراحت کن = rest! / take a rest!

Many Persian verbs work this way:

• کار کردن = to work
• صحبت کردن = to talk
• فکر کردن = to think
• استراحت کردن = to rest

So instead of having a single simple verb, Persian often uses a noun-like element plus a light verb such as کردن.

کن is the informal singular imperative of کردن.

Since استراحت کردن is the full verb to rest, the command is built by keeping استراحت and changing کردن into its imperative form:

• استراحت کردن = to rest
• استراحت کن = rest! (to one person, informal)

This matches the earlier هستی, which is also informal singular. So the whole sentence is speaking to one person in an informal way.

It is informal singular.

You can tell because of:

• هستی = you are (informal singular)
• کن = do / rest (informal singular command)

If you wanted to say this politely or to more than one person, you would use:

• اگر خسته هستید، امشب در خانه آرام استراحت کنید.

That version is formal singular or plural.

The polite version is:

اگر خسته هستید، امشب در خانه آرام استراحت کنید.

Changes:

• هستی → هستید
• کن → کنید

So:

• informal: اگر خسته هستی ... استراحت کن
• polite/formal: اگر خسته هستید ... استراحت کنید

This is one of the most important politeness patterns in Persian.

It is normal, especially with family, friends, or someone younger.

In Persian, imperatives are common and not automatically rude. Tone and relationship matter a lot. In a caring context, استراحت کن can sound warm and natural, like:

• You should rest
• Go get some rest

If you want to sound softer, Persian can also use expressions like:

• بهتره استراحت کنی = it’s better if you rest
• کمی استراحت کن = rest a little

But the original sentence is perfectly natural and kind.

Yes. آرام has a range of meanings depending on context:

• calm
• quietly
• peacefully
• gently

In this sentence, several English translations are possible:

• rest quietly at home tonight
• rest peacefully at home tonight
• take it easy and rest at home tonight

All of these capture the general meaning. Persian آرام is a bit broader than any one English word here.

Yes, absolutely. Persian often uses the shorter spoken/written form:

• اگر خسته‌ای، امشب در خانه آرام استراحت کن.

Here خسته‌ای is essentially خسته هستی contracted.

Both are correct:

• خسته هستی = a bit fuller
• خسته‌ای = very common and natural

Learners should recognize both forms.

The pattern is:

اگر + condition, main clause + imperative verb

Specifically:

• اگر خسته هستی = if you are tired
• امشب در خانه آرام استراحت کن = tonight at home quietly rest

So it follows a common Persian structure:

1. conditional clause
2. time/place/manner details
3. final verb

The final verb position is especially important in Persian. Even in commands, the verb usually comes at the end.

Yes, you could say:

امشب اگر خسته هستی، در خانه آرام استراحت کن.

That would mean something like: Tonight, if you’re tired, rest quietly at home.

This shifts the focus slightly toward tonight, but the meaning stays very similar. Persian allows this kind of movement, especially for emphasis or style.

The original version is still the most straightforward and neutral.