Sulk"i*ness, n. [For sulkenness, fr. AS. solcen slothful, remiss, in asolcen, besolcen, properly p.p. of sealcan in asealcan to be weak or slothful; of uncertain origin.]
The quality or state of being sulky; sullenness; moroseness; as, sulkiness of disposition.
© Webster 1913.