โMightโ and โMustโ are two words in the English dictionary. These two words are used by a person in the sentence when it is needed to speculate something to someone regarding a specific thing.
Key Takeaways
- โMightโ indicates a possibility or likelihood, whereas โmustโ expresses a necessity or requirement.
- โMightโ suggests uncertainty and can be used to propose a hypothetical scenario, while โmustโ implies certainty and obligation.
- โMightโ can also be used to ask for permission, whereas โmustโ does not have this connotation and is more forceful in tone.
Might vs Must
When the word Might is used in a sentence, it denotes a sense of power that is accountable or a special force that a person influences on another person, and on the other hand, the word Must is used in a sentence, it denotes that a sure thing is mandatory or is essential for something to happen by a person.

The word โmightโ is used in a sentence by a person to indicate that something may or may not happen depending on the performance of a specific situation at a particular time. This word is used to say that something may happen, but itโs not sure.
The word โMustโ is used in a sentence to indicate that something at some particular time is significant to be done or that something is necessary for something to happen or not happen. It shows a firm intention of doing or telling to do something.
Comparison Table
Parameters of Comparison | Might | Must |
---|---|---|
What it denotes | When the word Might is used in a sentence, it denotes a sense of power that is accountable or a special force that a person influences another person. | When the word Must is used in a sentence, it denotes that a sure thing is mandatory or essential for something to happen to a person. |
Degree of intensity | The degree of intensity for doing something in โMightโ is less than โmustโ. | Doing something in โmustโ is more intense than โmightโ. |
Function | The use of โMightโ in a sentence denotes a possibility of an event happening without certainty. | The use of must in a sentence denotes the obligation of an event with certainty. |
Type of communication | โMightโ is a more formal way of talking. | โMustโ is an informal way of talking. |
Example | We might go to the park tomorrow. | We must wash our hands before eating food. |
What is Might?
The word โmightโ is used in a sentence by a person to indicate that something may or may not happen depending on the performance of a specific situation to a particular period. This word is used to say that something may happen, but itโs not sure.
The word โMightโ is used in a sentence. It denotes a sense of power that is accountable or a special force that a person influences another person.
Following are some examples where the word โMightโ is used in a sentence-
- I might go to the party tomorrow.
- She might cancel the test tomorrow.
- He might not have been attentive in class at that time.
- I might have been at the English class that day.
- We all might go to the park tomorrow for a picnic.

What is Must?
The word โMustโ is used in a sentence to indicate that something at some particular time is significant to be done or that something is necessary for something to happen or not happen. It shows a firm intention of doing or telling to do something.
The word Must is used in a sentence. It denotes that a sure thing is mandatory or essential for something to happen to a person.
Following are some examples where the word โMustโ is used in a sentence-
- She must attend online lectures every day of her classes.
- You all must surely be there at our wedding.
- You must be so tired today!
- Wearing a mask for today is a must outside the road.

Main Differences Between Might and Must
- When the word Might is used in a sentence, it denotes a sense of power which is accountable or a special force that a person influences another person. On the other hand, when the word Must is used in a sentence, it denotes that a certain thing is mandatory or is essential for something to happen by a person.
- The degree of intensity for doing something in โMightโ is less than โmustโ; on the other hand, the degree of power of doing something in โmustโ is more than โmightโ.
- The use of โMightโ in a sentence denotes a possibility of an event happening without certainty. On the other hand, the use of must in a sentence indicates the obligation of an affair with confidence.
- I might not go to school tomorrow is an example of the word โMightโ in a sentence, and on the other hand, I must go to school tomorrow is an example of the word โMustโ in a sentence.
- Might is a more formal way of talking, and conversely, must is an informal way of speaking.


Emma Smith holds an MA degree in English from Irvine Valley College. She has been a Journalist since 2002, writing articles on the English language, Sports, and Law. Read more about me on her bio page.