Words

Difference Between Assume and Presume

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Main Difference

The main difference between assume and presume is in their meaning. Assume means to make a guess which is based on little or no evidence, whereas the verb presumes means to make a rational guess which is based on some evidence.

Assume vs. Presume

Assume and presume are verbs. The meaning of assume is to suppose or to undertake. It also means to take for granted or to take upon. The meaning of presume is to dare, to suppose, or to take for granted. The difference between assume and presume is in the degree of their certainty. Assume means to make a guess which is based on little or no evidence. It is irrational. However, to presume means to make a rational guess, which is based on some evidence.

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The assumption is a loose guess with no evidence from the situation. The presumption is a strong or informed guess with pieces of evidence from the situation. There is a difference in the degree of probability between both words. The degree of probability in the verb assume is less. The degree of probability in the verb presume is more.

The words ‘assume’ and ‘presume’ originates from the same root. Assume derives from the Latin word summer, which has the meaning “to take or to adopt.” The word presumes also originates from the Latin verb summer, which has the meaning “to take upon, to take the liberty, to take for granted. The words assume and presume are, sometimes, interchangeable. For example, I assume I can get my reputation back if I go to that event. I presume I can get my reputation back if I go to that event.

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The difference between assume and presume can also be kept in mind by the “pre” in presume. Both the words are spelled the same, but their prefix is different. In general, both the words assume and presume have their existence, meaning, and usage.

Comparison Chart

AssumePresume
A verb that means to suppose or to undertake. It also means to take for granted or to take uponA verb that means to dare, to suppose, or to take for granted
Degree of Probability
LessMore
Origin
Latin word sumere which has the meaning “to take or to adopt”Latin verb sumere which has the meaning “to take upon, to take the liberty, to take for granted
Examples
I assume that this is the natural color of your eyesI presume you are exhausted after such a hectic routine
Prefix
-as-pre

What is Assume?

The meaning of assume is to suppose or to undertake something. It also means to take for granted or to take upon. Assume means to make a guess which is based on little or no proof/evidence. It is irrational. If someone says that he assumes a certain thing then t means that he has no idea if his assumption is true or false. It is something close to the intuitions or related to it. However, assumptions can also be true in many cases.

In the parts of speech, assume falls into the degree of the verb. It is a task that someone does. Assume is also used while someone is making a debate. For example, “Assuming you are correct, why should I do that? The assumption is a loose guess, with no evidence from the situation. It just depends on the will of a person and what he wants from a particular situation/condition. The degree of probability in the verb assume is less.

As far as its etymology is concerned, assume derives from the Latin word sumere, which has the meaning “to take or to adopt.” Sometimes, assume is also synonymous with its counterpart presume.

Examples

  • I assume that this is the natural color of your eyes.
  • I assume you have made these cheese sandwiches.
  • Clark assumed the dress she was going to wear on her birthday next year.

What is Presume?

The meaning of presume is to dare, to suppose, or to take for granted. In the parts of speech, presume falls into the category of a verb. To presume means to make a rational guess, which is based on some evidence. Presume needs proof or evidence. It always has proof as to its basis. Presume is also sometimes synonymous with its counterpart assume. The presumption is a strong or informed guess with pieces of evidence from the situation. The degree of probability in the verb presume is high.

The origin of presume dates back to the Latin verb sumere, which has the meaning “to take upon, to take the liberty, to take for granted. To presume also means “to act without permission, to undertake with boldness.” Presume has a different meaning in the context of the law. It refers to the acceptance of something as true because the proof of its falsity is not presented in court.

Examples

  • I presume you are exhausted after such a hectic routine.
  • I was going with my friends somewhere, and we saw a bus accident. It was so intense that we presumed many severe injuries.
  • “I can find my lost wallet if I go to the mall again,” he presumed.

Key Differences

  1. The meaning of assume is to suppose or to undertake whereas the meaning of presume is to dare, to suppose, or to take for granted.
  2. To assume means to make a guess which is based on little or no evidence on the flip side to presume means to make a rational guess which is based on some evidence.
  3. The assumption is irrational conversely presumption is somehow rational.
  4. The assumption is a loose guess with no evidence from the situation; on the other hand, the presumption is a strong or informed guess with evidence from the situation.
  5. Assume derives from the Latin word sumere, which has the meaning “to take or to adopt while the word presumes also originates from the Latin verb sumere which has the meaning “to take upon, to take the liberty, to take for granted.
  6. The degree of probability in the verb ‘assume’ is less; on the contrary, the degree of probability in the verb ‘presume’ is more.

Conclusion

Assume and presume are two different words. Both are different in their use, meaning, and existence.

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Aimie Carlson

Aimie Carlson is an English language enthusiast who loves writing and has a master degree in English literature. Follow her on Twitter at @AimieCarlson