| Idiom | Meaning | Example | 
| set in her ways | 
having old habits, not able to change easily
 | 
After living alone for fifty years, Florence was set in her ways.
 | 
| set of wheels | 
vehicle, car, truck, wheels
 | 
The Ford needs a lot of repairs. I need a new set of wheels.
 | 
| set off | 
start, trigger
 | 
Who set off the fire alarm? Who pushed the button?
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| set out | 
place where you can see it, put where it can be used
 | 
Tomorrow we go to the lake, so set out your swim suit and towel.
 | 
| set out for | 
leave, embark
 | 
Then we set out for Pluto, where it's much colder than the arctic.
 | 
| set out to | 
plan to,  hope to
 | 
"What did you set out to do?" "I wanted to change the world."
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| set the table | 
set plates and cutlery on the table
 | 
If you will set the table, I won't ask you to wash the dishes.
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| set the world on fire | 
do great things, achieve fame and wealth
 | 
I don't want to set the world on fire. I just want a career.
 | 
| set-to | 
argument, fight
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After playing cards, the brothers had a set-to. They argued.
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| set-up | 
plan, scheme
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Here's the set-up: You buy the tickets; I'll collect the money.
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