The Collaborative International Dictionary of English v.0.48:
Safeness \Safe"ness\, n. The quality or state of being safe; freedom from hazard, danger, harm, or loss; safety; security; as the safeness of an experiment, of a journey, or of a possession. [1913 Webster]WordNet (r) 3.0 (2006):
safeness n 1: the quality of being safe [ant: dangerousness]