a noun for a person who just cannot decide what to do in his/her life; a person who always thinks about everything but can't get things done; a man with no apparent progress in what he wants to achieve; always in the status of 'still', still thinking, still raging, still in progress, etc
: Man, he's a stiller. He has all the skills and ability to be successful but he just doesn't know what he wants and where he's going!
: Yeah. What a shame...