Ensure vs Have a guarantee vs Make sure

When to use each in English, with meaning, register, and examples.

Ensure

Top 2,000 (common)B2verb

Have a guarantee

Top 2,000 (common)

Make sure

Top 1,000 (very common)
Most common: Make sure
 EnsureHave a guaranteeMake sure
Pronunciation🇬🇧 /["/ɪnˈʃʊə(r)//ɪnˈʃɔː(r)/","/ɪnˈʃʊəz//ɪnˈʃɔːz/","/ɪnˈʃʊəd//ɪnˈʃɔːd/","/ɪnˈʃʊərɪŋ//ɪnˈʃɔːrɪŋ/"]/🇺🇸 /["/ɪnˈʃʊr/","/ɪnˈʃʊrz/","/ɪnˈʃʊrd/","/ɪnˈʃʊrɪŋ/"]/🇬🇧 //hæv ə ˌɡɛənˈti//🇺🇸 //hæv ə ˌɡɛr.ənˈti//🇬🇧 //meɪk ʃɔː//🇺🇸 //meɪk ʃʊr//
MeaningTo make sure something happens or is true.To have a promise that something will happen or be done.Check that something is done or true.
ExamplePlease ensure that all doors are locked before leaving the building.I have a guarantee that the product will work for two years.Make sure you lock the door before leaving.
RegisterNeutralNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)Top 1,000 (very common)
CEFR levelB2--
Part of speechverb
Collocationspractically, virtually, effectively, must, aim to, try to, an attempt to ensure something, efforts to ensure something, measures to ensure somethinghave a warranty, provide a guarantee, offer a guaranteemake sure that, make sure to, make sure you, make sure everything, make sure it is
Antonymsneglect, ignore--
Common mistakesConfused with 'insure' which relates to insurance., Used incorrectly as a standalone verb without an object., Mispronounced as 'en-sure' instead of 'en-shur'.Confusing with 'warranty' - a specific type of guarantee., Using 'have' incorrectly in other tenses., Replacing 'guarantee' with 'warranty' in general use.Using 'make sure' without a clause, e.g., 'Make sure.' instead of 'Make sure it's correct.', Confusing 'make sure' with 'ensure'; they are similar but 'ensure' is more formal., Omitting the subject in sentences, e.g., 'Make sure you're prepared.' instead of 'You need to make sure you're prepared.'
Usage notesUse '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 contexts where assurance is given, typically in consumer transactions. Avoid in casual conversation without a clear context.Use 'make sure' in everyday conversation to emphasize confirmation. It's appropriate in both casual and professional settings but avoid overly formal contexts.

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Ensure
Have a guarantee
Make sure

Frequently asked questions: Ensure vs Have a guarantee vs Make sure

What's the difference between Ensure, Have a guarantee, and Make sure?

Ensure: To make sure something happens or is true. Have a guarantee: To have a promise that something will happen or be done. Make sure: Check that something is done or true.

Which is more common: Ensure, Have a guarantee, and Make sure?

Make sure is the most common in everyday English.

Can you show an example of each?

Ensure: Please ensure that all doors are locked before leaving the building. Have a guarantee: I have a guarantee that the product will work for two years. Make sure: Make sure you lock the door before leaving.

Can I use Ensure, Have a guarantee, and Make sure interchangeably?

Not always. Ensure, Have a guarantee, and Make 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.

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