| Idiom | Meaning | Example | 
| look down your nose at | 
look at a person as though he is not as good as you
 | 
Just because he's rich he looks down his nose at us.
 | 
| look high and low | 
look everywhere, leave no stone unturned
 | 
We've looked high and low for that watch, but we can't find it.
 | 
| look into | 
investigate, find the facts, get to the bottom of
 | 
The principal will look into the attendance problem and see what is causing it.
 | 
| look like death warmed over | 
appear to be sick, look pale or weak
 | 
Mom is not feeling well. She looks like death warmed over.
 | 
| look like he was dragged through a knothole | 
appear to be very tired, burn out, run down
 | 
After a divorce and a funeral, Anne looked like she'd been dragged through a knothole.
 | 
| look out | 
be careful
 | 
Look out! That knife is sharp.
 | 
| look out for | 
watch, protect, look after
 | 
Please look out for your sister. She needs your protection.
 | 
| look out for number one | 
help yourself first, get enough for yourself
 | 
You can look out for number one as well as help your friends.
 | 
| look over | 
check, examine, look at
 | 
I've looked over the report. It contains the data we need.
 | 
| look over your shoulder | 
look to see who is following you
 | 
He's always looking over his shoulder to see who's after him.
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