He showed up in my apartment at dinner time withou
t warning, and asked for something to eat. He's brazen. (He's got some nerve)..........

He's not ambitious at all. He's adapted to a situation
that he's not satisfied with, but won't do a thing. He's shiftless.................
To me "shiftless" generally means a bit more than just too lazy, but it is ok.
He can see to any kind of
problem he faces without having to ask for help. He's self-reliant......................

Are the definitions correct? Could anybody help me with more suitable words? Thanks in advance