'Look forward to' means...
Wait for or anticipate something pleasant
Consider something, but not seriously
Improve your knowledge quickly
'Look upon as' means...
Stay at home because someone is going to visit
Consider, regard
Leave an organisation, usually to form a new one
'Look to' means...
Expect, hope
Increase volume, temperature, etc.
Join houses that had been separate
'Look out' means...
Communicate an emotion
Change TV channels repeatedly
Be careful
'Look round' means...
Inspect a house
When a hot liquid spills out of a container
Be nearly a certain period of time
'Look up to' means...
Take someone around a site
Come to understand
Respect
'Look in on' means...
Visit briefly to see if everything's all right
Criticise
Wait
'Look for' means...
Become involved in something when your involvement is not wanted
Make someone depressed
Try to find
'Look after' means...
Lose faith in or stop believing in something or someone
Start ging towards a place
Take care
'Look on' means...
Make someone less confident
Watch something like a crime without helping
Become clear or apparent