| Idiom | Meaning | Example | 
| off the shelf | 
from the store shelf, run of the mill
 | 
It isn't a special gift, just an off-the-shelf radio with batteries.
 | 
| off the top of my head | 
without thinking carefully, off the cuff
 | 
Off the top of my head, I believe  the US has 50 states.
 | 
| off the wagon | 
drinking again, drunk again
 | 
He's off the wagon again. He started drinking last night.
 | 
| off the wall | 
unrelated, unusual, off topic
 | 
His idea of selling time is really off the wall - quite strange.
 | 
| off to a bad start | 
not a good start, a poor beginning
 | 
The class got off to a bad start because the teacher was sick.
 | 
| off to a good start | 
a successful beginning, away to the races
 | 
Jim's off to a good start in math. He has the basic skills.
 | 
| off to the races | 
moving quickly ahead, off to a good start
 | 
When we get our business loan, we'll be off to the races.
 | 
| off topic | 
not on the chosen topic, not related to the topic
 | 
If you're writing about dogs, flowers are off topic.
 | 
| off with | 
remove clothing or a covering
 | 
Off with your overcoat, Ben. Stay and visit awhile.
 | 
| off with you | 
leave, go, skidaddle
 | 
Off with you, girl, or you'll be late for school.
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