Off
To be friendly with each other immediately
Hit it off
to deal with a difficult period or situation without becoming any less certain or determined in your plans or opinions
tough it out
To take a criminal to the police, or to go to them yourself to admit a crime
Turn in
To warn someone secretly about something that will happen, so that they can take action or prevent it from happening:
Tip someone off
To give some money when several people are giving money to pay for something together:
Chip in
To finish something in an enjoyable or successful way:
Top it off