किरायेदार मेरी दोस्त है।

Because मेरा / मेरी / मेरे agrees with the noun that follows.

Here, मेरी goes with दोस्त in the sense of female friend. So:

• मेरा दोस्त = my male friend
• मेरी दोस्त = my female friend

This is a very common pattern in Hindi. Even though दोस्त often looks the same for both genders, the possessive helps show whether the friend is male or female.

Usually, दोस्त can be used for both a male friend and a female friend.

So both of these are possible:

• मेरा दोस्त = my male friend
• मेरी दोस्त = my female friend

Hindi also has more specifically gendered words:

• सहेली = female friend
• मित्र = friend, more formal/literary

So this sentence could also be phrased with सहेली if you want to make the female sense explicit in a different way, but मेरी दोस्त is very natural.

किरायेदार is often treated as a common-gender noun in form, meaning the word itself usually does not change shape for masculine vs feminine.

So:

• वह किरायेदार है can refer to a man or a woman, depending on context.

In this sentence, we understand the tenant is female because she is being identified as मेरी दोस्त with मेरी, which points to a female friend.

So the noun किरायेदार itself does not tell you the gender clearly by its ending, but the rest of the sentence helps.

Hindi normally does not use articles like English a / an / the.

So a bare noun like किरायेदार can mean:

• a tenant
• the tenant

Which one is intended depends on context.

That is very normal in Hindi. Learners often want to insert something where English has a or the, but most of the time Hindi simply does not need it.

है is the present-tense form of to be for a singular subject.

This is an identity/equation sentence:

• X Y है = X is Y

So here, है links किरायेदार and मेरी दोस्त.

Compare:

• वह शिक्षक है। = He/She is a teacher.
• रीना मेरी दोस्त है। = Reena is my friend.

If the subject were plural, you would usually use हैं instead:

• किरायेदार मेरी दोस्तें हैं would not be natural because that would mix plural tenants with female friends in a strange way, but structurally हैं is the plural copula.

For this sentence, singular है is correct.

In standard Hindi, especially as a learner, you should keep it.

So:

• किरायेदार मेरी दोस्त है। ✅

Dropping है may happen in:

• very casual speech
• headlines
• poetic style
• certain conversational shortcuts

But it is not the safest standard choice for learners. If you are practicing correct, neutral Hindi, include है.

Yes, you can change it, but the emphasis changes.

This sentence puts किरायेदार first, so it sounds like:

• speaking about the tenant
• then saying who she is: my friend

If you say:

• मेरी दोस्त किरायेदार है।

that means:

• you are now talking about my friend
• and saying what she is: a tenant / the tenant

Both are grammatical, but they answer different implied questions:

• किरायेदार मेरी दोस्त है। = The tenant is my friend.
• मेरी दोस्त किरायेदार है। = My friend is the tenant / a tenant.

So word order in Hindi can be flexible, but the first noun often feels like the topic.

Because this is not an action sentence with a direct object. It is an equational sentence, where one thing is being identified as another.

In other words, this is not:

• someone doing something to someone else

It is:

• X is Y

So you do not need object markers like को, and you do not need ने either.

Structure:

• किरायेदार = subject/topic
• मेरी दोस्त = predicate noun/complement
• है = copula

That is why the sentence stays simple.

Because मेरी is already the possessive form meaning my.

In Hindi, possessive words like these directly come before the noun:

• मेरा घर = my house
• मेरी किताब = my book
• मेरे दोस्त = my friends / my male friend in some contexts

So:

• मेरी दोस्त = my friend

You use का / की / के in other possessive constructions, such as:

• राम की किताब = Ram’s book
• मेरी दोस्त की बहन = my friend’s sister

So there is no extra की needed between मेरी and दोस्त.

No, not in this sentence.

• दोस्त = friend
• दोस्ती = friendship

So:

• मेरी दोस्त = my friend
• मेरी दोस्ती = my friendship

Those are different nouns.

If you said किरायेदार मेरी दोस्ती है, it would be ungrammatical or at least not mean what you want. To identify a person, you need दोस्त, not दोस्ती.