hit upon
Have an idea
Try to attract someone sexually
hit up
Inject drugs
Ask someone for some money
hit it off
Have a good relationship from the first time you meet a person
hit out
To react viciously (towards someone/something).
To perform by good luck.
hit on
Have an idea
Talk to someone to try to attract them sexually
Ask for money
hit for
Get someone to pay or donate money
hit with
Surprise someone with some information or news
hit out at
Respond angrily to criticism
hit back
Attack or criticise
hit it off with
Like someone from the first time you meet them
hit up on
Inject drugs