What Does โBlow sth upโ Mean?
โBlow sth upโ is a phrasal verb that means to explode something or to make something bigger by filling it with air or gas. It can also mean to enlarge a photo or image.
Introduction
The phrase โblow sth upโ has several common uses in English. Most often, it means to cause an explosion or to fill something with air, like a balloon. It can also mean to enlarge or magnify something, such as a photograph. Understanding the blow sth up meaning helps learners use this versatile phrase correctly in different situations. Whether talking about inflating objects or describing explosions, this phrasal verb appears often in everyday English. Knowing how to use โblow sth upโ properly will improve your communication skills and help you understand movies, conversations, and written texts better.
Quick Info Box
- Phrasal verb: blow something up
- Type: transitive
- Level: B1
- Short meaning: to explode, inflate, or enlarge something
Structure (Grammar Rules)
โBlow sth upโ is a separable phrasal verb. This means the object can come between the verb and the particle or after the particle.
- Blow something up (formal)
- Blow it up (pronoun in the middle)
- Blow up something (less common but possible)
Examples:
- She blew the balloon up.
- He blew up the picture.
- They blew the building up.
How to Use โBlow sth upโ?
You can use โblow sth upโ in three main ways:
- To explode something: โThey blew up the old bridge during the demolition.โ
- To fill with air or gas: โPlease blow up the air mattress before our guests arrive.โ
- To enlarge an image or photo: โCan you blow up this photo so we can see the details?โ
Make sure to choose the correct meaning based on context. The phrase is often used in both casual and formal English.
Examples
- They decided to blow up the fireworks at midnight.
- Donโt forget to blow up the balloons for the party.
- The police blew up the suspicious package safely.
- Can you blow up this map so itโs easier to read?
- We blew up the old building to make space for a park.
Common Mistakes
- Incorrect: Blow up the balloon it.
- Correct: Blow it up / Blow up the balloon.
- Incorrect: Blow up the picture big.
- Correct: Blow up the picture / Blow the picture up.
Remember, the object should come either between โblowโ and โupโ or after โup,โ not both.
Differences / Synonyms
Blow sth up vs explode: โBlow sth upโ often means to cause an explosion, but โexplodeโ is more formal and general.
Blow sth up vs inflate: โBlow upโ is informal and commonly used for inflating objects, while โinflateโ is more formal.
Blow sth up vs enlarge: โBlow upโ is used for enlarging photos or images, while โenlargeโ is a formal term for making anything bigger.
Common Collocations
- Blow up a balloon
- Blow up a tire
- Blow up a building
- Blow up a photo
- Blow up fireworks
Related Phrasal Verbs
Here are related phrasal verbs of blow sth up:
Real-life Dialogue
Anna: Can you help me blow up these balloons for the party?
Ben: Sure! Iโll blow them up now.
Anna: Also, did you see the news about the old warehouse? They blew it up yesterday.
Ben: Wow, I didnโt know that. It must have been a big explosion.
Practice
Choose the correct sentence:
- a) Please blow the balloon it up.
- b) Please blow it up the balloon.
- c) Please blow up the balloon.
Answer: c) Please blow up the balloon.
FAQs
- Q: Can โblow sth upโ mean only explosions?
A: No, it can also mean inflating or enlarging something. - Q: Is โblow sth upโ formal English?
A: It is mainly informal but used in everyday speech and writing. - Q: Can I say โblow up the photoโ and โblow the photo upโ?
A: Yes, both are correct. - Q: What is the opposite of โblow sth upโ?
A: It depends on meaning, but for inflating, the opposite is โlet sth downโ or โdeflate.โ - Q: Can I use โblow sth upโ with people?
A: No, it is not used to mean exploding people. It is usually for objects.

