Cool MateOh really vs You don't say
When to use each in English, with meaning, register, and examples.
Oh really
Top 1,000 (very common)
You don't say
InformalTop 5,000 (fairly common)
Most formal: Oh reallyMost common: Oh really
| Oh really | You don't say | |
|---|---|---|
| Pronunciation | 🇬🇧 //əʊ ˈrɪəli//🇺🇸 //oʊ ˈrɪli// | 🇬🇧 //juː dəʊnt seɪ//🇺🇸 //ju doʊnt seɪ// |
| Meaning | An expression showing surprise or disbelief. | An expression used when surprised or doubtful about something. |
| Example | You got a promotion? Oh really! | He just won the lottery? You don't say! |
| Register | Neutral | Informal |
| How common | Top 1,000 (very common) | Top 5,000 (fairly common) |
| Collocations | oh really!, oh really?, say oh really | You don't say!, You don't say it lightly, You don't say with doubt |
| Antonyms | no way, I doubt it, not true | - |
| Common mistakes | 'Oh really' is sometimes used too formally in casual settings., Learners may confuse it with 'Oh, really?' at the start of a sentence., Using 'oh really' without proper intonation can make it sound flat. | Used inappropriately in serious discussions., Confused with similar phrases like 'Really?' or 'Is that so?', Not recognizing the sarcasm in the tone. |
| Usage notes | Used in conversations when responding to surprising or unexpected information. Can vary in tone from genuine interest to sarcasm depending on context. | Used in casual conversations, often sarcastically. It’s less appropriate in formal settings. |
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Frequently asked questions: Oh really vs You don't say
What's the difference between Oh really and You don't say?
Oh really: An expression showing surprise or disbelief. You don't say: An expression used when surprised or doubtful about something.
Which is more formal: Oh really and You don't say?
Oh really is the most formal of these.
Which is more common: Oh really and You don't say?
Oh really is the most common in everyday English.
Can you show an example of each?
Oh really: You got a promotion? Oh really! You don't say: He just won the lottery? You don't say!
Can I use Oh really and You don't say interchangeably?
Not always. Oh really and You don't say are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.