Muster up means to summon a quality such as courage, strength or enthusiasm, usually with visible effort. To use muster up in a sentence, name the quality and what it is for: “She mustered up the courage to speak.” The verb is separable and normally takes an abstract object.
Muster up at a glance
- Muster up is a phrasal verb; its forms are muster up, musters up, mustered up and mustering up.
- The object sits after up or between muster and up.
- The usual objects are courage, strength, energy, enthusiasm and a smile.
- Muster up belongs to storytelling, encouragement and journalism.
- The commonest error is dropping the object after the verb, as in mustered up to speak.
What does muster up mean?
Muster up is a phrasal verb meaning to summon a feeling or quality that is not easy to produce. The Cambridge entry for muster up records the sense of gathering something such as courage or strength. When the thing assembled is a group of people rather than a feeling, gather the team is the everyday alternative.
| Sense | Plain meaning | Example sentence |
|---|---|---|
| Summon a quality | Find courage or strength that is hard to reach | He mustered up the nerve to knock. |
| Produce with effort | Force out a reaction such as a smile | She mustered up a tired smile for the camera. |
| Assemble support | Gather people or backing for a purpose | They mustered up enough volunteers to start. |
One limitation is worth stating. Muster up does not mean to invent a feeling out of nothing; it suggests finding something already there but difficult to reach. It is also too grand for routine tasks, so a sentence about collecting ordinary objects needs a plainer verb such as collect donations instead.
How do you use muster up in a sentence?
Muster up is separable, so the object may follow up or sit between the two halves. A pronoun must go in the middle, and the object is almost always an abstract noun rather than a concrete one.
| Pattern | Example | What it signals |
|---|---|---|
| muster up + quality | Muster up some patience. | The neutral order with an uncountable noun. |
| muster + object + up | He mustered the courage up. | The same meaning with the object moved forward. |
| muster + pronoun + up | She mustered it up somehow. | The only order allowed with a pronoun. |
| be mustered up | Enough support was mustered up to continue. | Passive; the quantity matters more than the person. |
| muster up the courage to + verb | They mustered up the courage to ask. | Links the effort to the action it makes possible. |

Muster up in a sentence: examples across contexts
Muster up lives wherever a person reaches for something in short supply. The sentences below keep the verb while changing the challenge, from a school play to a news report.
| Context | Example sentence | Why this works |
|---|---|---|
| School | Sam mustered up the courage to read his poem aloud. | Names the quality and the action it unlocks. |
| Workplace | She mustered up the nerve to ask for a raise. | Nerve is the idiomatic object for a bold request. |
| Sport | The captain mustered up one last effort in the final minute. | A time marker shows the effort came at a cost. |
| Performance | He mustered up a smile as the curtain rose. | A concrete gesture shows a forced reaction. |
| Recovery | Maya mustered up the strength to walk to the door. | Strength suits a physical task after illness. |
| Fundraising | The volunteers mustered up enough support to reopen the hall. | Support is gathered in quantity, not summoned. |
| History essay | The village mustered up a militia within a week. | An older, literal sense of assembling people. |
| News report | Residents mustered up the resolve to rebuild after the flood. | Resolve gives the effort a formal, durable tone. |
| Conversation | I finally mustered it up and called her. | Pronoun between the halves, as in speech. |
In sport and fundraising, rally the group is common when the emphasis falls on people rather than on a feeling.
Muster up vs summon
Muster up and summon the courage describe the same inner act, and the difference is one of tone. Muster up admits that the effort felt hard; summon is cooler and more decisive.
| Attribute | muster up | summon |
|---|---|---|
| Effort implied | Noticeable struggle | Calm control |
| Typical object | Courage, nerve, strength, a smile | Courage, a response, patience |
| Particle allowed | Up is part of the verb | Up is optional |
| Register | Storytelling and encouragement | Neutral to formal |
| Implied outcome | Often a small human victory | No comment on difficulty |
Verdict: use muster up when the effort is part of the story, and summon when the act is simply reported.
Word forms and grammar of muster up
The verb inflects regularly, and its bare form also works as a noun. The table lists the forms learners build wrongly, including a confusion with a different phrasal verb.
| Form | Part of speech | Example |
|---|---|---|
| muster up | verb, base form | Try to muster up some energy. |
| musters up | verb, third person singular | He musters up a grin each morning. |
| mustered up | verb, past and past participle | They mustered up the nerve. |
| mustering up | verb, present participle | She is mustering up the will to start. |
| muster | noun | The whole squad passed muster at dawn. |
| bear up | different phrasal verb | Do not confuse muster up with bear up, which means to endure. |
The nearby verb evoke a memory is different again: it means to call something to mind, not to find strength.
Common mistakes with muster up
- Incorrect:
He mustered up to speak.Correct: He mustered up the courage to speak. Rule: Muster up needs an object, even when the infinitive follows. - Incorrect:
She mustered up it.Correct: She mustered it up. Rule: A pronoun object goes between muster and up. - Incorrect:
We mustered up the chairs before the meeting.Correct: We gathered the chairs before the meeting. Rule: Muster up takes abstract qualities, not furniture. - Incorrect:
He mustered up a courage to knock.Correct: He mustered up the courage to knock. Rule: Courage is uncountable, so it takes the or no article. - Incorrect:
She mustered up a reason for being late.Correct: She invented a reason for being late. Rule: Muster up finds a real quality; inventing is a different action.
Practice using muster up
Work through the six items, then check the reasoning as well as the answer.
- Fill the gap: Priya ______ up the nerve to raise her hand.
- Choose the better word: The tired teacher (mustered up / gathered) a smile for the class photo.
- Correct the error: He mustered up it and walked on stage.
- Build a sentence: use muster up the courage to about asking a question.
- Spot the register: which belongs in a news report — residents mustered up the resolve to rebuild, or residents found it in them to rebuild?
- Rewrite with the object in the middle: She mustered up her strength.
Answers
- mustered — the simple past matches the completed action.
- mustered up — the smile took effort, which is exactly what muster up adds.
- He mustered it up and walked on stage — the pronoun belongs between muster and up.
- Model answer: Tom mustered up the courage to ask the coach for another try.
- Residents mustered up the resolve to rebuild — the formal object keeps a report steady.
- She mustered her strength up — the object moves before the particle.
The bottom line
Use muster up in a sentence when someone reaches for courage, strength or patience that is hard to find, and keep the object after up or between muster and up. Two details decide most sentences: the object must be present, and a pronoun must sit in the middle. When the effort is simply reported rather than felt, summon is the cooler choice.

Frequently asked questions about muster up
Is it muster or muster up?
Both exist and mean almost the same, but muster up stresses the effort of reaching for a quality. Muster courage is slightly more formal and older; muster up the courage is the phrase most people use today. As a noun, muster alone is correct, as in pass muster.
What can you muster up?
The natural objects are qualities that are hard to produce: courage, nerve, strength, energy, patience, enthusiasm, resolve and even a smile. You cannot muster up concrete items such as chairs or paperwork, because those are gathered or collected rather than summoned from inside.
Is muster up formal or informal?
Muster up sits in the middle. It is too vivid for a dry technical report yet common in journalism, stories and encouragement, where the effort matters. In everyday speech people also say work up the courage, which is looser and even more conversational than muster up.
Why can you not say muster up it?
A pronoun object must sit between the verb and the particle, so the correct form is muster it up. Longer noun objects are freer: both muster up the courage and muster the courage up are accepted. The rule applies to every separable phrasal verb, not only this one.
Sometimes, finding the right words to express our emotions or thoughts can be challenging. This is where the phrase “muster up” comes into play. In simple terms, “muster up” means to gather or summon something, like courage, strength, or even a specific feeling.
When someone is asking you to “muster up” something, they are essentially urging you to find and gather that particular quality within yourself. It’s about accessing that inner reserve and bringing it forth when needed. So, the next time you feel the need to tap into your inner resources, remember the phrase “muster up” as a reminder to summon whatever it is you need to face a situation or overcome a challenge.
7 Examples Of Muster Up Used In a Sentence For Kids
- Muster up a smile and greet your friends.
- Can you muster up a big hug for your teacher?
- Let’s all muster up our courage and try something new.
- It’s time to muster up our energy for our fun activities.
- Remember to always muster up kindness towards others.
- How can we muster up ways to help those in need?
- Don’t worry if you’re scared, just muster up your bravery.
14 Sentences with Muster Up Examples
- Muster up the courage to ask your professors for help or clarification when needed.
- Are you able to muster up enough energy to attend that late-night study session?
- It can be tough to muster up motivation for assignments, but remember the end goal.
- Make sure to muster up the confidence to participate in class discussions and group projects.
- Don’t forget to muster up the discipline to stick to your study schedule.
- It’s important to muster up the strength to bounce back from academic setbacks.
- Sometimes you need to muster up patience while waiting for grades to be posted.
- Did you manage to muster up the determination to tackle that difficult subject?
- Muster up the creativity to come up with unique ideas for your projects or presentations.
- Set goals and muster up the drive to work towards achieving them.
- Have you been able to muster up the confidence to join that extracurricular activity you’re interested in?
- It’s essential to muster up the focus needed to excel in your studies.
- Muster up the courage to approach potential mentors or advisors for guidance.
- Remember to muster up the patience and perseverance needed to navigate the challenges of university life.
How To Use Muster Up in Sentences?
To use Muster Up in a sentence, follow these steps:
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Identify the emotion or feeling you want to convey in your sentence. Muster Up is typically used when referring to summoning or gathering strength, courage, or determination.
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Place “muster up” before the action or emotion you want to convey. For example: “She had to muster up the courage to give her presentation.”
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Consider the context of your sentence. Muster Up is often used in situations where someone needs to gather their inner resources to face a challenging or intimidating task.
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Ensure the sentence is grammatically correct. When using “muster up” in a sentence, make sure the rest of the sentence is structured properly to convey your message clearly.
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Practice using Muster Up in different sentences to become more comfortable with incorporating it into your everyday language. This will help you become more familiar with its usage and nuances.
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Remember to keep the tone and style of your sentence consistent with the meaning of Muster Up. It is a phrase that conveys determination or strength, so use it in contexts where those sentiments are appropriate.
By following these steps and practicing using Muster Up in various sentences, you can effectively incorporate this phrase into your vocabulary and communicate your thoughts and emotions more effectively.
Conclusion
In conclusion, the phrase “muster up” is commonly used in English to convey the idea of gathering or summoning the strength, courage, or energy needed for a particular task or situation. Throughout the examples provided, we see how this expression is used in various contexts, from preparing for a difficult conversation to summoning the motivation to face a challenge.
By mustering up the determination to push through obstacles or muster up the enthusiasm to tackle a project, individuals can overcome hurdles and achieve their goals. Whether it’s finding the courage to speak up or summoning the resolve to confront a fear, the phrase “muster up” encapsulates the act of summoning one’s inner resources to face demanding circumstances, making it a versatile and commonly used expression in everyday language.
