What Does “Bollix sth up” Mean?
“Bollix sth up” means to make a mistake or spoil something, often by doing it carelessly or badly.
Introduction
The phrase “bollix sth up” is a British informal expression used when someone messes up a task or situation. It is often used to describe errors caused by confusion, carelessness, or poor judgment. Understanding the bollix sth up meaning helps learners recognize when something has been done incorrectly or ruined. This phrase is commonly used in both spoken and written English to describe mistakes in a casual, sometimes humorous way. Knowing how to use “bollix sth up” properly will improve your conversational skills and help you express frustration or disappointment clearly.
Quick Info Box
- Phrasal verb: bollix something up
- Type: transitive
- Level: B2 (Upper-Intermediate)
- Short meaning: to mess something up or make a mistake
Structure (Grammar Rules)
“Bollix sth up” is a separable phrasal verb. This means the object (something) can come between “bollix” and “up” or after the entire phrase:
- Bollix something up (correct)
- Bollix up something (less common, but sometimes used)
Example patterns:
- Subject + bollix + object + up
- Subject + bollix up + object (less frequent)
How to Use “Bollix sth up”?
Use “bollix sth up” when you want to say someone has made a mess of a task or situation. It often implies blame or frustration. This phrase fits casual conversations, emails among friends, or informal writing. Avoid using it in formal or professional contexts because it is slang and can sound rude.
Examples
- He really bollixed up the report by forgetting the key figures.
- Don’t bollix up the presentation; double-check your slides.
- She bollixed up the booking and we lost our hotel reservation.
- They bollixed the project up by starting without a clear plan.
- Stop bollixing things up and focus on the task.
Common Mistakes
- Incorrect: I bollix uped the order.
Correct: I bollixed up the order. - Incorrect: He bollix the up report.
Correct: He bollixed up the report. - Incorrect: They bollix the task.
Correct: They bollixed up the task.
Differences / Synonyms
Similar phrasal verbs include mess up, screw up, and bungle. While all mean to make a mistake, “bollix up” is more British and informal. “Mess up” is more common globally and less harsh. “Screw up” is informal but can be stronger or rude. “Bungle” is more formal and means to do something clumsily.
Example differences:
- Bollix up: Emphasizes confusion or carelessness in British English.
- Mess up: General and widely used in all English varieties.
- Screw up: Casual but can be offensive in some contexts.
- Bungle: Formal, focuses on incompetence.
Common Collocations
- bollix up a plan
- bollix up a job
- bollix up a task
- bollix up an order
- bollix up a meeting
Real-life Dialogue
Anna: Did you finish the report?
Mark: I tried, but I think I bollixed it up. I missed some important data.
Anna: Oh no! Can you fix it before the meeting?
Mark: I’ll try. I don’t want to bollix it up again.
Practice
Fill in the blank with the correct form of “bollix up”:
She __________ the presentation by forgetting her notes.
- a) bollixed up
- b) bollix uped
- c) bollixes
FAQs
- Is “bollix sth up” formal?
No, it is informal and mostly used in casual British English.
- Can I use “bollix up” with any object?
Yes, but it usually refers to mistakes with tasks or plans.
- What is the origin of “bollix up”?
It comes from British slang, related to messing things up badly.
- Is it rude to say “bollix up”?
It can be mildly rude, so avoid using it in formal settings.
- How is “bollix up” different from “mess up”?
“Bollix up” is more British and informal, while “mess up” is more common worldwide.

