The Collaborative International Dictionary of English v.0.48:
Injudiciousness \In`ju*di"cious*ness\, n. The quality of being injudicious; lack of sound judgment; indiscretion. --Whitlock. [1913 Webster]WordNet (r) 3.0 (2006):
injudiciousness n 1: lacking good judgment [syn: injudiciousness, indiscreetness] [ant: judiciousness] 2: the trait of being injudicious [syn: indiscretion, injudiciousness]