The Collaborative International Dictionary of English v.0.48:
Soulless \Soul"less\, a. Being without a soul, or without greatness or nobleness of mind; mean; spiritless. [1913 Webster] Slave, souless villain, dog! --Shak. [1913 Webster]WordNet (r) 3.0 (2006):
soulless adj 1: lacking sensitivity or the capacity for deep feeling