Ensure vs I guarantee you
When to use each in English, with meaning, register, and examples.
Ensure
Top 2,000 (common)B2verb
I guarantee you
Top 2,000 (common)
| Ensure | I guarantee you | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ɪnˈʃʊə(r)//ɪnˈʃɔː(r)/","/ɪnˈʃʊəz//ɪnˈʃɔːz/","/ɪnˈʃʊəd//ɪnˈʃɔːd/","/ɪnˈʃʊərɪŋ//ɪnˈʃɔːrɪŋ/"]/🇺🇸 /["/ɪnˈʃʊr/","/ɪnˈʃʊrz/","/ɪnˈʃʊrd/","/ɪnˈʃʊrɪŋ/"]/ | 🇬🇧 //aɪ ˈɡærənˌti jʊ//🇺🇸 //aɪ ˈɡærənˌti jʊ// |
| Meaning | To make sure something happens or is true. | I promise you that something will happen. |
| Example | Please ensure that all doors are locked before leaving the building. | I guarantee you will love this new restaurant. |
| Register | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | B2 | - |
| Part of speech | verb | |
| Collocations | practically, virtually, effectively, must, aim to, try to, an attempt to ensure something, efforts to ensure something, measures to ensure something | guarantee satisfaction, guarantee results, guarantee success |
| Antonyms | neglect, ignore | - |
| Common mistakes | Confused with 'insure' which relates to insurance., Used incorrectly as a standalone verb without an object., Mispronounced as 'en-sure' instead of 'en-shur'. | 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 'ensure' when you want to guarantee an outcome or confirm safety. It's appropriate in both spoken and written contexts, though more commonly in formal writing. Avoid using 'ensure' in casual conversations where simpler words like 'make sure' might be more fitting. | Use in informal to neutral conversations to assure someone. Avoid in highly formal writing or speeches. |
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Frequently asked questions: Ensure vs I guarantee you
What's the difference between Ensure and I guarantee you?
Ensure: To make sure something happens or is true. I guarantee you: I promise you that something will happen.
Can you show an example of each?
Ensure: Please ensure that all doors are locked before leaving the building. I guarantee you: I guarantee you will love this new restaurant.
Can I use Ensure and I guarantee you interchangeably?
Not always. Ensure 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.