Of course i do vs Sure
When to use each in English, with meaning, register, and examples.
Of course i do
Top 5,000 (fairly common)
Sure
Top 1,000 (very common)A1adjective
Most common: Sure
| Of course i do | Sure | |
|---|---|---|
| Pronunciation | 🇬🇧 //əv kɔːs aɪ du//🇺🇸 //əv kɔrs aɪ du// | 🇬🇧 /["/ʃʊə(r)//ʃɔː(r)/"]/🇺🇸 /["/ʃʊr/"]/ |
| Meaning | Yes, definitely. | certain or confident about something |
| Example | Do you love ice cream? Of course I do! | I am sure that we will win the game. |
| Register | Neutral | Neutral |
| How common | Top 5,000 (fairly common) | Top 1,000 (very common) |
| CEFR level | - | A1 |
| Part of speech | adjective | |
| Collocations | Of course I agree, Of course not, Of course you can | be, feel, seem, absolutely, completely, quite, about, of, be, feel, seem, absolutely, completely, quite, about, of |
| Antonyms | - | uncertain, doubtful, unsure |
| Common mistakes | Misuse with sarcasm when agreement is not intended., Omitting 'of' and saying 'course I do'., Using it in negative contexts. | Used too casually in formal situations., Confused with 'surely' which implies a stronger confirmation., Mispronounced as 'sher' instead of 'shur'. |
| Usage notes | Used to affirm or agree emphatically. Appropriate in both casual and formal contexts. | Used to express agreement or assurance. It's typically appropriate in most casual and formal contexts, but can feel dismissive if overused in a conversation. |
See it in real clips
Frequently asked questions: Of course i do vs Sure
What's the difference between Of course i do and Sure?
Of course i do: Yes, definitely. Sure: certain or confident about something
Which is more common: Of course i do and Sure?
Sure is the most common in everyday English.
Can you show an example of each?
Of course i do: Do you love ice cream? Of course I do! Sure: I am sure that we will win the game.
Can I use Of course i do and Sure interchangeably?
Not always. Of course i do and Sure 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.