mopey

Etymology

mope + -y

adj

1. Given to moping; in a depressed condition, low in spirits; lackadaisical.
   [T]hat is partly owing . . . to young Alexis having been desultory and mopy of late—not taking the interest in his music he did. 1888, Charlotte M. Yonge, chapter 14, in Beechcroft at Rockstone
   He got mopy and melancholy, and couldn't or wouldn't work. 1917, Lucy Maud Montgomery, chapter 11, in Anne's House of Dreams
   In the 1980s, liberals nursed the fear that we really might be dwelling in an irrelevant cul-de-sac outside of the majority American culture. That kept us sullen and mopey. 13 Oct 2003, Michael Kinsley, “Why Bush Angers Liberals”, in Time