—v.intr. (often foll. by on, upon, over) consider or contemplate with lust, greed, malice, triumph, etc. (gloated over his collection).
—n.
1 the act of gloating.
2 a look or expression of triumphant satisfaction.
Derivatives:
gloater n. gloatingly adv.
Etymology: 16th c.: orig. unkn., but perh. rel. to ON glotta grin, MHG glotzen stare
Useful english dictionary. 2012.