O
letter О
The Russian letter О. Letter name: о. Example word: окно.
Learn O with free cards in 30 seconds.
10 minutes a day can add up to 3,000 words a year. Spaced flashcards bring each word back when it is time to remember it.
O fits your vocabulary level. Check your level if you are not sure.

How many words can you learn in a year?
If you learn 8-10 new words a day and review them regularly with flashcards, you can cover about 3,000 words in a year.
ZapomniEnglish brings words back at the right time: difficult words appear more often, familiar words less often.
Not sure what pace to start with? Check your vocabulary level and we will suggest words for your level.
We count words you add to learning and review regularly. Active use grows gradually and depends on practice.
| Pace | Per day | Per year | Best for |
|---|---|---|---|
| Easy | 3 words | ≈ 1,100 words | starting without pressure |
| Balanced | 5 words | ≈ 1,800 words | steady growth |
| Recommended | 8 words | ≈ 2,900 words | around 3,000 words a year |
| Fast | 10 words | ≈ 3,650 words | visible vocabulary growth |
| Intensive | 15 words | ≈ 5,500 words | strong motivation |
O with English translation
O usage examples
Usage examples will appear here with translation and context.
Learn by topic
O belongs to the topic "Russian Alphabet". Start with a short 7-word set so the word is easier to remember in context.
O synonyms
What's the difference between O / Null / O-Ton / das O / O wie Otto
The most exact and neutral expression: it clearly refers to the letter, not to a sound or another symbol.
Der Buchstabe O kommt im Wort „Oma“ vor.
Буква О встречается в слове «Oma».
Not a real synonym for the letter O; it can only appear in wordplay where O is confused with zero.
Das O sieht man in diesem Wort, nicht die Null.
В этом слове видна буква О, а не ноль.
Usually means a direct quote or an audio track, not the name of the letter; hardly related to the alphabet.
Der Journalist gab den O-Ton des Zeugen wieder.
Журналист передал прямую речь свидетеля.
Neutral way to refer to the letter O itself as an alphabet character.
Das O ist ein Vokal im Deutschen und im Russischen.
Буква О — это гласная и в немецком, и в русском языке.
Not the letter name itself, but a spelling aid using an example word to make the letter clear when spoken.
Ich buchstabiere O wie Otto.
Я произношу по буквам: О как в слове Otto.
What's the difference
More related word breakdowns
Short comparisons help you choose the right word by meaning, context, and typical examples.

В чем разница в английском между carry, wear, tote и lug
Carry — нести или иметь при себе, wear — носить на теле, tote — таскать с собой, lug — тащить тяжёлое с усилием.

В чем разница в английском между whole, entire, complete и intact
Разница между whole, entire, complete и intact: целое, весь объем, завершенность и сохранность без повреждений.

В чем разница в английском между choose, pick, select и opt for
Разница между choose, pick, select и opt for: обычный выбор, разговорный выбор, выбор из списка и осознанное предпочтение.
Related words and lists for O
How to pronounce O and what this word means
O translation: letter О. This page includes translation, pronunciation, transcription, audio, usage examples and related words.
how to pronounce O
[ʔoː]
O translation
letter О
O transcription
[ʔoː]
How this dictionary entry is reviewed
ZapomniEnglish prepares dictionary data automatically, then the editorial workflow checks high-frequency words, top lists, and pages that already receive search impressions first.
Questions about this word
O meaning: what does it mean?
der russische Buchstabe О
O pronunciation: how do you pronounce it?
O is pronounced as [ʔoː]. Audio is available on this page when the word has a recording.
Is O part of Russian Alphabet vocabulary?
Yes, O (О) can be learned in the Russian Alphabet topic. This semantic link helps build related word lists and topic-based practice.
Learn O in your vocabulary
Add this word to practice, repeat it with audio, examples and your own word lists.