against
touching and pressing to a surface (with support/pressure)
- Pronunciation: /əˈɡenst/. Think: A is pushed to B (contact + pressure/support).
- Against vs on: on is on top of a surface; against is pressed to the side (lean against a wall).
- Useful patterns: be against + noun (opposed to), against the rules (in violation), against the clock (time pressure).
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Examples
Spatial examples
The ladder is against the wall.
He leaned against the door.
They voted against the plan.
We are fighting against the disease.
It's against the rules to smoke here.
We worked against the clock to finish on time.
She put on sunscreen to protect her skin against the sun.
Related prepositions
Key differences
Against is about contact plus pressure/support. Beginners often confuse it with on and next to.
On is on top of a surface; against is pressed to the side of a surface.
Next to means beside (not necessarily touching). Against implies touching/pressure.
In front of is relative position; against is contact (can be any direction).
Quick check questions (decision tree)
Is it touching with pressure/support (pressed to a surface)?
Yes -> use against (The ladder is against the wall.).
Is it on top of a surface with contact?
Yes -> use on (on the table / on the floor).
Do you only mean beside/near (not necessarily touching)?
Yes -> use next to/near. Against implies contact.
Does it mean opposed to / in opposition to?
Yes -> use against (vote against, fight against, against the rules).
Is it a collision/impact idea?
Yes -> against is common (bump into/against).
Common collocations
Contact / support
Verbs + against
Opposition (extension)
Common mistakes
Avoid: The ladder is on the wall.
Use: The ladder is against the wall.
Reason: A ladder is pressed to the wall (contact/support), not on top of it.
Avoid: He stood next to the door and pushed it. (meaning: pressed to it)
Use: He stood against the door and pushed.
Reason: Next to is just beside; against implies contact/pressure.
Avoid: I am against the table. (meaning: beside it)
Use: I am next to the table.
Reason: Against implies touching; next to is the neutral beside position.
Avoid: I am against to the idea.
Use: I am against the idea.
Reason: Pattern: be against + noun/noun phrase (no 'to').
Mini quiz
Question 1
Choose the correct preposition: The ladder is ___ the wall.
Choose an answer
Question 2
Choose the correct preposition: He leaned ___ the door.
Choose an answer
Question 3
Choose the correct preposition: It's ___ the rules to smoke here.
Choose an answer
Quick FAQ
What does "against" mean?+
Against often means touching with pressure or support. Example: The ladder is against the wall.
What is the difference between "against" and "on"?+
On is on top of a surface (on the table). Against is pressed to the side (against the wall).
What is the difference between "against" and "next to"?+
Next to is beside (not necessarily touching). Against implies touching/pressure.
When do I use "lean against"?+
Use it when someone/something rests with support: He leaned against the door.
Can "against" mean "opposed to"?+
Yes. Example: vote against the plan / fight against the disease / against the rules.
What are common collocations with "against"?+
against the wall, lean against, press against, push against, against the rules, against the law.
Is "against" used for time expressions?+
Not for basic time like "on Monday". But it is common in the fixed phrase "against the clock" (working under time pressure).
How can I remember "against" quickly?+
Think "A is pushed to B": contact plus pressure/support (against the wall).