English marks gender only on a handful of pronouns (he/she/it), so it asks almost nothing of you. Russian asks for gender agreement on adjectives, possessives, and the entire past tense — every modifier and every past-tense verb must echo the gender of its noun or subject. Most of the time this is mechanical and easy; the errors cluster in three places: forgetting to make the adjective match, forgetting that the past tense agrees with the speaker's own sex, and mis-guessing the gender of a noun whose ending lies (soft-sign nouns and the -а nouns that are really masculine). This page works through all three.
Adjectives must match their noun
A Russian adjective takes a different ending for masculine, feminine, and neuter. The single commonest beginner error is leaving the adjective in its dictionary (masculine) form when the noun is feminine or neuter. маши́на ("car") is feminine, so "a new car" is но́вая маши́на, never *но́вый маши́на.
Мне о́чень нра́вится твоя́ но́вая маши́на.
I really like your new car.
Э́то ста́рое зда́ние, ему́ почти́ сто лет.
This is an old building, it's almost a hundred years old.
Како́й краси́вый го́род!
What a beautiful city!
The endings ride together as a set: masculine -ый/-ой/-ий, feminine -ая/-яя, neuter -ое/-ее. The full system is on the adjective agreement page.
The past tense agrees with the subject's gender
This is the error that even fluent learners forget under pressure. The Russian past tense has no person endings — instead it agrees in gender with the subject. So a man says Я был, but a woman says Я была́; the form changes with who is speaking, not with the pronoun. English has nothing like this — "I was" is "I was" for everyone.
Я была́ вчера́ на конце́рте, бы́ло потряса́юще!
I was at a concert yesterday, it was amazing! (woman speaking)
Я был на рабо́те весь день и ужа́сно уста́л.
I was at work all day and got terribly tired. (man speaking)
Because the past tense uses gender, not person, the polite/plural вы triggers the plural ending — even when you are addressing one person formally. Вы был is wrong; it must be *Вы бы́ли.
Вы уже́ бы́ли в Санкт-Петербу́рге?
Have you been to Saint Petersburg before? (polite вы → plural бы́ли)
Мы бы́ли так ра́ды тебя́ ви́деть!
We were so glad to see you! (мы → plural бы́ли)
See past-tense gender agreement for the full -л / -ла / -ло / -ли pattern.
Soft-sign nouns: gender you must memorize
Nouns ending in -а/-я are usually feminine and nouns ending in a consonant are usually masculine — but nouns ending in a soft sign (-ь) split between masculine and feminine with no reliable surface clue. тетра́дь ("notebook/exercise book") is feminine, so "my notebook" is моя́ тетра́дь, not *мой тетра́дь. There is no shortcut: you learn the gender as part of the word.
Где моя́ тетра́дь по матема́тике? Я не могу́ её найти́.
Where's my maths notebook? I can't find it.
Но́чью на у́лице была́ глубо́кая тишина́.
At night there was deep silence on the street. (ночь and тишь are feminine -ь nouns)
У нас в кварти́ре оди́н большо́й слова́рь и две тетра́ди.
We have one big dictionary and two notebooks at home. (слова́рь is masculine, тетра́дь feminine)
The -а nouns that are really masculine
A small but high-frequency group of nouns ends in -а/-я (the "feminine" ending) yet refers to males and is grammatically masculine: па́па (dad), де́душка (grandpa), дя́дя (uncle), мужчи́на (man), ю́ноша (youth). They decline like feminine nouns but take masculine agreement — so it is мой па́па, not моя́ па́па, and the past tense is па́па пришёл, not пришла́.
Мой па́па рабо́тает врачо́м в большо́й больни́це.
My dad works as a doctor at a big hospital.
Вчера́ к нам прие́хал дя́дя Ва́ня из дере́вни.
Uncle Vanya came to visit us from the village yesterday.
Э́тот мужчи́на спроси́л, как пройти́ к вокза́лу.
This man asked how to get to the station.
The reverse never happens with these: their meaning (a male person) fixes the gender. Contrast them with genuinely feminine -а nouns like ма́ма, тётя, же́нщина, which take feminine agreement.
Common Mistakes
❌ У меня́ но́вый маши́на.
Incorrect — маши́на is feminine, so the adjective must be но́вая.
✅ У меня́ но́вая маши́на.
I have a new car.
❌ Я был на ры́нке, купи́ла о́вощи.
Incorrect — a woman speaking must use the feminine past была́, not был.
✅ Я была́ на ры́нке, купи́ла о́вощи.
I was at the market, bought some vegetables. (woman speaking)
❌ Вы был на собра́нии?
Incorrect — polite вы takes the plural past бы́ли, even for one person.
✅ Вы бы́ли на собра́нии?
Were you at the meeting?
❌ Дай мне мой тетра́дь, пожа́луйста.
Incorrect — тетра́дь is a feminine soft-sign noun, so it's моя́ тетра́дь.
✅ Дай мне мою́ тетра́дь, пожа́луйста.
Give me my notebook, please.
❌ Моя́ па́па за́втра прие́дет.
Incorrect — па́па is grammatically masculine despite the -а; use мой and the masculine past.
✅ Мой па́па за́втра прие́дет.
My dad will arrive tomorrow.
❌ Дя́дя пришла́ домо́й по́здно.
Incorrect — дя́дя is masculine, so the past tense is пришёл.
✅ Дя́дя пришёл домо́й по́здно.
Uncle came home late.
Key Takeaways
- Adjectives and possessives must match their noun's gender: но́вая маши́на (fem.), ста́рое зда́ние (neut.), краси́вый го́род (masc.).
- The past tense agrees with the subject's gender, not person: a woman says Я была́, a man Я был; polite/plural вы always takes бы́ли.
- Soft-sign (-ь) nouns split unpredictably between masculine and feminine — тетра́дь, ночь, ра́дость are feminine; слова́рь, день are masculine. Memorize gender with the word.
- A few -а/-я nouns naming males are masculine: па́па, де́душка, дя́дя, мужчи́на, ю́ноша take мой and the masculine past, despite the feminine-looking ending.
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- Grammatical Gender: Masculine, Feminine, NeuterA1 — Every Russian noun is masculine, feminine, or neuter — and unlike most gendered languages, you can predict the gender from the nominative-singular ending about 95% of the time: a hard consonant or -й is masculine, -а/-я is feminine, -о/-е is neuter; the awkward class is nouns in -ь, which can be either gender and must be learned individually; gender governs adjective and past-tense agreement, so it travels with the noun as an inseparable label.
- Past-Tense Gender and Number AgreementA2 — The Russian past tense agrees with its subject in gender (singular) and number — он чита́л, она́ чита́ла, оно́ чита́ло, они́ чита́ли. The traps: я/ты take the gender of the real speaker or addressee; polite Вы always takes plural -ли even for one person; кто forces masculine and что forces neuter regardless of the real referent. This page works through every agreement target.
- Adjective Agreement: The BasicsA1 — Russian adjectives agree with their noun in gender, number, AND case. In the nominative the endings are masculine -ый/-ий/-ой (но́вый, ма́ленький, большо́й), feminine -ая/-яя (но́вая, после́дняя), neuter -ое/-ее (но́вое, после́днее), and plural -ые/-ие (но́вые) for all genders. So 'new' is но́вый дом, но́вая маши́на, но́вое окно́, but но́вые кни́ги. Adjectives also change for case (в но́вом до́ме) and normally come BEFORE the noun, as in English.
- Свой: The Reflexive PossessiveB1 — свой ('one's own') points back to the subject of the clause and agrees with the possessed noun like мой (свой/своя́/своё/свои́). It is what disambiguates Он лю́бит свою́ жену́ ('his own wife') from Он лю́бит его́ жену́ ('another man's wife'). This page gives the full declension, the subject-reference rule, why it can't stand in the subject slot, and the idiom свой челове́к.