The Collaborative International Dictionary of English v.0.48:
Unease \Un*ease"\, n. Want of ease; uneasiness. [Obs.] [1913 Webster]WordNet (r) 3.0 (2006):
unease n 1: physical discomfort (as mild sickness or depression) [syn: malaise, unease, uneasiness] 2: the trait of seeming ill at ease [syn: disquiet, unease, uneasiness]