What Does “Stuff sth up” Mean?
“Stuff sth up” means to make a mistake or to mess something up, often causing a problem or failure.
Introduction
The phrasal verb “stuff sth up” is commonly used in informal English to describe situations where someone has made an error or caused a problem, usually by accident. Understanding the Stuff sth up meaning helps learners recognize when something has gone wrong or been spoiled. This phrase is versatile and often used in everyday conversations, especially when talking about mistakes or failures. Knowing how to use it correctly will improve your ability to express frustration or acknowledge errors naturally.
Quick Info Box
- Phrasal verb: Stuff something up
- Type: Transitive
- Level: B2 (Upper-Intermediate)
- Short meaning: To make a mistake or cause a problem
Structure (Grammar Rules)
“Stuff sth up” is a separable phrasal verb. This means you can place the object something (sth) between “stuff” and “up” or after “up”.
- Subject + stuff + object + up
Example: I really stuffed the report up. - Subject + stuff + up + object
Example: I really stuffed up the report.
Both forms are correct and commonly used.
How to Use Stuff sth up?
Use “stuff sth up” when you want to talk about making mistakes or causing problems, especially in informal settings. It often refers to actions that affect tasks, plans, or situations negatively. You can use it to admit fault or describe someone else’s mistake. It is more common in British English but understood worldwide.
Examples
Imagine you were responsible for organizing a meeting, but you forgot to book the room. You might say:
- I really stuffed up the meeting arrangements.
- She stuffed up the presentation by missing important details.
- They stuffed up the order, so the delivery was late.
- Don’t stuff up this chance; it’s important!
- He always stuffs things up when he’s nervous.
These examples show how “stuff sth up” can describe errors affecting different situations.
Common Mistakes
People sometimes confuse the word order or use the phrase in the wrong context. Here are some common errors:
- Incorrect: I stuffed up the homework.
Correct: I stuffed the homework up. / I stuffed up the homework. - Incorrect: She stuff up the project.
Correct: She stuffed up the project. - Incorrect: Can you stuff up?
Correct: Can you stuff it up? (if referring to something specific)
Remember, the verb “stuff” must be in past tense (stuffed) when talking about mistakes already made.
Differences / Synonyms
“Stuff sth up” is similar to “mess up,” “screw up,” and “botch.” However, there are slight differences:
- Mess up: More general, can be formal or informal.
- Screw up: Very informal, often stronger than “stuff up.”
- Botch: Usually means to do something badly or clumsily.
“Stuff sth up” is mild and commonly used in British English, while “screw up” is more common in American English.
Common Collocations
You’ll often hear “stuff up” with these objects:
- Plans: To ruin or cause problems with arrangements.
- Work: To make mistakes in a job or task.
- Order: To confuse or incorrectly fulfill a request.
- Situation: To cause difficulties or problems.
- Opportunity: To lose a chance by making a mistake.
Real-life Dialogue
Here’s a short conversation between two friends discussing a mistake:
Anna: Did you finish the event schedule?
Mark: Actually, I stuffed it up. I put the wrong dates.
Anna: Oh no! Can you fix it before tomorrow?
Mark: Yes, I’m on it now.
Practice
Try to complete the sentence with the correct form of “stuff up”:
- She __________ the report by forgetting the key data.
- Don’t __________ the presentation tomorrow!
- They __________ the order, so we got the wrong items.
- He always __________ things up when he’s under pressure.
(Answers: stuffed up, stuff up, stuffed up, stuffs)
FAQ
- What does “stuff sth up” mean?
It means to make a mistake or cause a problem. - Is “stuff sth up” formal?
No, it is informal and mostly used in casual conversation. - Can I use “stuff up” for people?
Yes, it refers to mistakes people make, but usually with tasks or situations. - Is “stuff up” the same as “mess up”?
They are similar, but “mess up” is more common worldwide. - How do I use “stuff sth up” in a sentence?
Example: I stuffed up the meeting by arriving late.

