Cool MateGuarantee vs You can't promise somethin' like that
When to use each in English, with meaning, register, and examples.
Guarantee
Top 2,000 (common)B2verb
You can't promise somethin' like that
InformalTop 2,000 (common)
Most formal: Guarantee
| Guarantee | You can't promise somethin' like that | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˌɡærənˈtiː/","/ˌɡærənˈtiːz/","/ˌɡærənˈtiːd/","/ˌɡærənˈtiːɪŋ/"]/🇺🇸 /["/ˌɡærənˈtiː/","/ˌɡærənˈtiːz/","/ˌɡærənˈtiːd/","/ˌɡærənˈtiːɪŋ/"]/ | 🇬🇧 //juː kɑːnt ˈprɒmɪs ˈsʌmθɪŋ laɪk ðæt//🇺🇸 //ju kɑnt ˈprɑmɪs ˈsʌmθɪŋ laɪk ðæt// |
| Meaning | A promise that something will happen or be done. | You cannot make a promise about something like that. |
| Example | I can guarantee that you will enjoy this movie. | You can't promise somethin' like that; it's just too risky. |
| Register | Neutral | Informal |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | B2 | - |
| Part of speech | verb | |
| Collocations | absolutely, personally, constitutionally, be able to, can, be fully guaranteed, absolutely, almost, practically | make a promise, keep a promise, promise to help, promise someone, promise you won't |
| Antonyms | doubt, uncertainty, dispute | - |
| Common mistakes | Confused with 'ensure' — 'guarantee' implies a stronger promise., Incorrectly using 'guarantee' without a direct object — always specify what is guaranteed., Mixing up 'guaranteed' as an adjective instead of a past participle. | 'Promise' is often confused with 'guarantee', which have different meanings., Learners may forget to use 'that' after 'like' when trying to convey a specific example., 'Somethin'' is sometimes mistakenly written as 'something' in informal contexts. |
| Usage notes | Use 'guarantee' when you want to express certainty about an outcome. It's suitable for both written and spoken English, but avoid in casual conversations where simpler words like 'promise' may suffice. | Used in casual conversation, often implies doubt or impossibility about the promise made. |
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Frequently asked questions: Guarantee vs You can't promise somethin' like that
What's the difference between Guarantee and You can't promise somethin' like that?
Guarantee: A promise that something will happen or be done. You can't promise somethin' like that: You cannot make a promise about something like that.
Which is more formal: Guarantee and You can't promise somethin' like that?
Guarantee is the most formal of these.
Can you show an example of each?
Guarantee: I can guarantee that you will enjoy this movie. You can't promise somethin' like that: You can't promise somethin' like that; it's just too risky.
Can I use Guarantee and You can't promise somethin' like that interchangeably?
Not always. Guarantee and You can't promise somethin' like that 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.