What Does “Plug sth up” Mean?
“Plug sth up” means to block or stop something from flowing or opening, usually by inserting an object that fills the space.
Introduction
The phrase “plug sth up” is a common phrasal verb in English that refers to closing or blocking an opening or passage to prevent something from passing through. This could be a pipe, hole, or any space where flow or movement occurs. Understanding the plug sth up meaning helps learners describe everyday situations like fixing a sink or stopping a leak. It is widely used in both spoken and written English, especially when talking about repairs or blockages. Knowing how to use this phrase correctly can improve your communication skills and make your English sound more natural.
Quick Info Box
- Phrasal verb: plug sth up (plug something up)
- Type: transitive
- Level: B1 (Intermediate)
- Short meaning: to block or stop an opening or passage
Structure (Grammar Rules)
“Plug sth up” is a separable phrasal verb. This means you can place the object (something) either between “plug” and “up” or after “up.”
- Plug something up (correct): Please plug the drain up.
- Plug up something (correct): Please plug up the drain.
Both forms are acceptable, though “plug up something” is more common in everyday speech.
How to Use “Plug sth up”?
Use “plug sth up” when you want to describe the action of blocking or closing something to stop flow or movement. It’s often used with pipes, holes, or openings. For example, if a sink is leaking, you might say, “I need to plug the sink up.”
It can also be used metaphorically, such as blocking a gap in a conversation or preventing a problem from growing.
Examples
When the kitchen sink was clogged, I had to plug it up to stop the water from overflowing.
- She plugged up the hole in the wall with some putty.
- The plumber plugged the pipe up to prevent leaks.
- Don’t forget to plug up the drain before filling the bathtub.
- They plugged up the broken window with cardboard until it could be fixed.
Here is “plug sth up” in a sentence: “He plugged the drain up to keep the water from going down.”
Common Mistakes
People sometimes confuse “plug sth up” with similar phrases or use incorrect word order.
- Incorrect: “Plug up the sink it.”
- Correct: “Plug the sink up.”
- Incorrect: “Plug it.”
- Correct: “Plug it up.” (When meaning to block)
- Incorrect: “Plug up sink.”
- Correct: “Plug up the sink.”
Remember to include the object and use correct word order.
Differences / Synonyms
Similar phrasal verbs include “block up,” “stop up,” and “clog up.” While they all involve blocking, subtle differences exist.
- Block up: Often used for completely obstructing an opening.
- Stop up: Very similar to “plug up,” commonly used for drains and pipes.
- Clog up: Usually implies a blockage caused by dirt or debris, often gradual.
“Plug sth up” usually implies deliberately inserting something to close an opening, whereas “clog up” is often accidental.
Common Collocations
Here are common objects you can “plug up” and their meanings:
- Drain: To block water from flowing out.
- Pipe: To stop the flow of liquid or gas.
- Hole: To fill or close an opening in a surface.
- Gap: To close a space between two objects.
- Sink: To block water from draining.
Related Phrasal Verbs
Here are related phrasal verbs of plug sth up:
Real-life Dialogue
Here is a short conversation using “plug sth up”:
Alex: The bathroom sink is leaking again.
Jamie: Did you try to plug it up?
Alex: Not yet. I’ll plug the drain up with a rag for now.
Jamie: Good idea. Then call a plumber.
Practice
Choose the correct sentence:
- a) I need to plug up the hole in the wall.
- b) I need to plug the hole up in the wall.
- c) I need to plug the hole in the wall up.
All sentences are correct, but (a) and (c) are more common.
Fill in the blank:
Can you _____ the drain _____ before filling the sink?
Answer: plug up
FAQs
- What does “plug sth up” mean? It means to block or stop an opening or passage.
- Is “plug sth up” separable? Yes, you can put the object between “plug” and “up” or after “up.”
- Can “plug sth up” be used with pipes? Yes, it is often used when blocking pipes or drains.
- What is the difference between “plug up” and “clog up”? “Plug up” usually means deliberately blocking, while “clog up” refers to accidental blockage.
- Is “plug sth up” formal or informal? It is neutral and can be used in both formal and informal contexts.

