A coward. One who wishes to force his own religious, political or social views on a population by means of causing fear, distress and disruption. Terrorists do not have the means, intelligence or humanity to believe in discussion or democracy. They will not assemble an army and declare war, nor will they confront their problems face to face like men. Rather, they will perform sneaky, underhanded acts of barbarism and brutality - killing thousands of innocent men, women and children just to make a point. They will perform such manly, proud acts as tying a man up and slitting his throat on national TV, hijacking a school full of children and hiding bombs on public transport.
Terrorists have no emotion, no humanity and will even kill themselves in order to perform a successful massacre.
They are wimps and have no place (nor any desire for) a safe and civillised world.
If their God is looking down on them, surely he would not be happy and proud of what his "subjects" are doing.
Russia, Madrid, New York, and London have all been victims of terrorist scumbags.