Cool MateAssure vs I guarantee you
When to use each in English, with meaning, register, and examples.
Assure
Top 1,000 (very common)B2verb
I guarantee you
Top 2,000 (common)
Most common: Assure
| Assure | I guarantee you | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/əˈʃʊə(r)//əˈʃɔː(r)/","/əˈʃʊəz//əˈʃɔːz/","/əˈʃʊəd//əˈʃɔːd/","/əˈʃʊərɪŋ//əˈʃɔːrɪŋ/"]/🇺🇸 /["/əˈʃʊr/","/əˈʃʊrz/","/əˈʃʊrd/","/əˈʃʊrɪŋ/"]/ | 🇬🇧 //aɪ ˈɡærənˌti jʊ//🇺🇸 //aɪ ˈɡærənˌti jʊ// |
| Meaning | To make someone feel sure about something | I promise you that something will happen. |
| Example | I assure you that everything will be fine. | I guarantee you will love this new restaurant. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 2,000 (common) |
| CEFR level | B2 | - |
| Part of speech | verb | |
| Collocations | can, hasten to, of, let me assure you | guarantee satisfaction, guarantee results, guarantee success |
| Antonyms | doubt, disprove, deny | - |
| Common mistakes | Confused with 'ensure' which means to make certain something happens., Using it without a direct object; 'I assure that...' is incorrect., Mixing up 'assure' with 'insure' which relates to insurance. | Omitting 'you' and saying 'I guarantee'., Using 'guarantee' with a noun directly instead of a personal pronoun., Confusing with 'ensure' which implies preventing something. |
| Usage notes | Use 'assure' when you want to promise someone that something is true or will happen. It’s often used in more formal situations. Avoid using it in casual conversations where simpler verbs like 'tell' or 'say' might fit better. | Use in informal to neutral conversations to assure someone. Avoid in highly formal writing or speeches. |
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Frequently asked questions: Assure vs I guarantee you
What's the difference between Assure and I guarantee you?
Assure: To make someone feel sure about something I guarantee you: I promise you that something will happen.
Which is more common: Assure and I guarantee you?
Assure is the most common in everyday English.
Can you show an example of each?
Assure: I assure you that everything will be fine. I guarantee you: I guarantee you will love this new restaurant.
Can I use Assure and I guarantee you interchangeably?
Not always. Assure and I guarantee you 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.