brooding

brooding (http://definr.com/brooding)

     adj 1: persistently or morbidly thoughtful [syn: broody, contemplative,
             meditative, musing, pensive, pondering, reflective,
             ruminative]
     2: good at incubating eggs especially a fowl kept for that
        purpose; "a brood hen" [syn: brood, hatching]
     n 1: sitting on eggs so as to hatch them by the warmth of the
          body [syn: incubation]
     2: persistent morbid meditation on a problem [syn: pensiveness]