Cool MateOh come on vs Seriously
When to use each in English, with meaning, register, and examples.
Oh come on
InformalTop 3,000 (common)
Seriously
Top 2,000 (common)B1adverb
Most formal: SeriouslyMost common: Seriously
| Oh come on | Seriously | |
|---|---|---|
| Pronunciation | 🇬🇧 //əʊ kəm ɒn//🇺🇸 //oʊ kəm ɑn// | 🇬🇧 /["/ˈsɪəriəsli/"]/🇺🇸 /["/ˈsɪriəsli/"]/ |
| Meaning | A phrase used to express disbelief or frustration. | used to show that something is true or important |
| Example | Oh come on, you can't be serious! | I seriously need to improve my math skills before the exam. |
| Register | Informal | Neutral |
| How common | Top 3,000 (common) | Top 2,000 (common) |
| CEFR level | - | B1 |
| Part of speech | adverb | |
| Collocations | oh come on, really?, oh come on, not again, oh come on, just admit it | seriously consider, seriously doubt, seriously think, seriously injure |
| Antonyms | - | playfully, jokingly |
| Common mistakes | Using it in formal conversations where it's not appropriate., Misplacing the tone, making it sound less genuine., Translating the phrase directly into other languages. | Using 'serious' instead of 'seriously' in adverbial contexts., Confusing with 'sincerely' when trying to express genuine feelings. |
| Usage notes | Used in casual conversations, often to show annoyance. Avoid in formal settings. | Usually used to emphasize seriousness in conversations. It can sound casual in informal settings but is appropriate in serious discussions. |
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Frequently asked questions: Oh come on vs Seriously
What's the difference between Oh come on and Seriously?
Oh come on: A phrase used to express disbelief or frustration. Seriously: used to show that something is true or important
Which is more formal: Oh come on and Seriously?
Seriously is the most formal of these.
Which is more common: Oh come on and Seriously?
Seriously is the most common in everyday English.
Can you show an example of each?
Oh come on: Oh come on, you can't be serious! Seriously: I seriously need to improve my math skills before the exam.
Can I use Oh come on and Seriously interchangeably?
Not always. Oh come on and Seriously 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.