[suhl-uh
n] 
| 1. | showing irritation or ill humor by a gloomy silence or reserve. |
| 2. | persistently and silently ill-humored; morose. |
| 3. | indicative of gloomy ill humor. |
| 4. | gloomy or dismal, as weather or a sound. |
| 5. | sluggish, as a stream. |
| 6. | Obsolete. malignant, as planets or influences. |
| sul·len (sŭl'ən) adj. sul·len·er, sul·len·est
[Middle English solein, from Anglo-Norman solein, alone, from sol, single, from Latin sōlus, by oneself alone; see s(w)e- in Indo-European roots.] sul'len·ly adv., sul'len·ness n. |