Look after someone/something
- take care of someone/something
If you want to go out, I'll look after the children for you.
Look down on someone/something
- regard someone/something as inferior, worse
He is a snob who looks down on people with a working-class background.
Look in (on someone)
- make a short visit; call to see someone
I’ll look in on you when I'm in Leeds.
Look into something
- investigate/research something
The police are looking into the matter very thoroughly.
Look on
- watch inactively
I couldn't just stand there looking on while the old lady struggled with her bags, so I helped her.
Look on someone
- regard, consider as
I've always looked on Tom as someone with very special personal qualities.
Look out
- be careful
Look out when you're crossing the street!
Look out (for someone/something)
- keep a watch for, be alert so as to see/notice somebody /something
I’ll look out for Mr Brown and give him your message.
Look over someone/something
- examine someone/something
The manager is looking over two new applicants at the moment.
Look to someone (for something)
- turn to/rely on sb. (for help, reassurance, encouragement etc.)
If Bob needs advice he always looks to his father.
Look up
- improve
The weather's looking up at last.
Look someone up
- go to visit someone informally
We could look my parents up when we're in Liverpool.
Look something up
- search for something in a dictionary, timetable, map etc
If you don't know what the word means, look it up!
Look up to someone
- admire, have a very good opinion of somebody
Chris has always looked up to his father, who's a self-made man.