a Jewish person who subscribes to 'indie' and 'hipster' norms and associates with interests of the like. Especially one who moves to a trendy hipster neighborhood and starts shopping at thrift stores, makes sad music with keyboards and harmonicas and takes up smoking to fit in with other hipsters.
Adam Green is such a jewpster. I can see his Jew fro from a mile away!
Jewster is a jew that celebrates easter. You get the easter basket, you eat the candy, and you love Cadbury Creme Eggs, but you don't attend church and don't believe in the ressurection of Jesus.