(adj) The act or willingess of sharing.
Distinct from generous by specifically implying an act of sharing rather than giving.
Dude, don't bogart the whole thing, be shareful.
To share. To be kind and be sharing with anyone.
Robbie is shareful with his compliments when Amy comes to work with a new pair of shoes.
Adjective - To not be greedy or stingy with one's possessions; not to necessarily give one's possessions away, but to share them with others
"Willy Nelson was very shareful with his weed today... he got us all high!"
"I just wish Christian would be more shareful...I'm sick of watching him play games and get high while he pretends we're not here."
Jerri is a very shareful person; she always gives a portion of her lunch to her coworkers.