Assume vs Presume
When to use each in English, with meaning, register, and examples.
Assume
Top 1,000 (very common)B2verb
Presume
Top 3,000 (common)C1verb
Most common: Assume
| Assume | Presume | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/əˈsjuːm/","/əˈsjuːmz/","/əˈsjuːmd/","/əˈsjuːmɪŋ/"]/🇺🇸 /["/əˈsuːm/","/əˈsuːmz/","/əˈsuːmd/","/əˈsuːmɪŋ/"]/ | 🇬🇧 /["/prɪˈzjuːm/","/prɪˈzjuːmz/","/prɪˈzjuːmd/","/prɪˈzjuːmɪŋ/"]/🇺🇸 /["/prɪˈzuːm/","/prɪˈzuːmz/","/prɪˈzuːmd/","/prɪˈzuːmɪŋ/"]/ |
| Meaning | To take something as true without proof. | To think something is true without proof. |
| Example | I assume you will be attending the meeting tomorrow. | I presume you have already completed the assignment. |
| Register | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 3,000 (common) |
| CEFR level | B2 | C1 |
| Part of speech | verb | verb |
| Collocations | automatically, naturally, reasonably, can, might, tend to, let us assume | correctly, wrongly, reasonably, be presumed dead, be presumed guilty, be presumed innocent, correctly, wrongly, reasonably, be presumed dead, be presumed guilty, be presumed innocent |
| Antonyms | doubt, disregard, question | doubt, disbelieve, reject |
| Common mistakes | Often confused with 'presume', which implies a stronger basis for belief., Mistakenly used in place of 'guess', which is more uncertain. | Confused with 'assume' — assume can imply less certainty., Using 'presume' in place of 'presumed' incorrectly., Misplacing the object; 'presume that' is more specific. |
| Usage notes | Commonly used in everyday conversation and writing. Avoid using 'assume' in very formal contexts where more precise language is needed. | Use 'presume' when you're making a reasonable guess based on available information. Avoid in formal situations that require certainty. Suitable for casual conversations. |
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Frequently asked questions: Assume vs Presume
What's the difference between Assume and Presume?
Assume: To take something as true without proof. Presume: To think something is true without proof.
Which is more common: Assume and Presume?
Assume is the most common in everyday English.
Which is more advanced: Assume and Presume?
Presume is the highest level, at C1, on the CEFR scale.
Are Assume and Presume the same CEFR level?
Assume: B2, Presume: C1 on the CEFR scale.
What part of speech are Assume and Presume?
Assume: verb, Presume: verb.
Can you show an example of each?
Assume: I assume you will be attending the meeting tomorrow. Presume: I presume you have already completed the assignment.
Can I use Assume and Presume interchangeably?
Not always. Assume and Presume 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.