свой vs собственный

svoy vs sobstvennyy — one's own vs one's own/personal (emphatic)

What it really means

Свой is the reflexive possessive adjective meaning "one’s own." It refers back to the subject of the clause and avoids ambiguity: "Он любит свою работу" (He loves his own job). Собственный also means "own" or "personal," but it is an ordinary adjective with a stronger emphatic or contrastive nuance: "У неё собственный бизнес" (She has her own business).

Use свой when the possessor is the sentence subject: Я взял свою книгу (I took my book). Use мой/твой/его when you need a different possessor. Собственный can replace свой for emphasis, but it does not automatically solve the reflexive-reference rule and it agrees with the noun.

Examples in natural speech

Я забыл свой телефон.
I forgot my phone.
Она любит свою работу.
She loves her own job.
Он открыл собственный магазин.
He opened his own shop.
У нас есть собственный сад.
We have our own garden.
Мария попросила брата взять свою сумку.
Maria asked her brother to take his own bag.
Мария попросила брата взять её сумку.
Maria asked her brother to take her bag.

Common mistakes

The key mistake is replacing свой with мой/твой/его in a sentence where the subject owns the item, which can create the wrong reference: "Он взял свою книгу" is his own book, while "Он взял его книгу" is another man’s book. Собственный is not a replacement for every possessive pronoun.

Memory tip

Свой points back to the subject; собственный means own with extra emphasis or independence.

Frequently asked questions

What is the difference between свой and собственный in Russian?

Свой is the reflexive possessive "one’s own" and normally refers to the subject. Собственный is an adjective meaning own or personal, often with emphatic or contrastive force.

When should I use свой instead of мой?

Use свой when the possessor is the subject: "Я взял свою книгу" (I took my book). Мой can also be used, but свой makes the subject reference clear and is especially important in third-person sentences.

Does собственный refer back to the subject?

Собственный can describe something belonging to the subject, but it is not the special reflexive pronoun. It emphasises personal ownership: собственный дом (one’s own house).

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