The Byronic hero, incapable of love or capable only of an impossible love, suffers endlessly. He is solitary, languid [and] his condition exhausts him. If he wants to feel alive, it must be in the terrible exaltation of a brief and destructive action.
The Byronic Hero is a character notable for being sullen, withdrawn, hard to like and hard to know but, usually possessing a rich inner life and a softer side, accessible only to a special few.
The verb glower, “to look or stare with sullen dislike” comes from Middle English gloren [or] glouren “to shine, gleam, glow, stare, stare at fixedly.” The Middle English forms are mostly from the north (Yorkshire) and Scotland. [T]he sense “to stare at fixedly” is Scottish. The source of gloren and glouren is obscure but, possibly, Scandinavian, e.g., Icelandic [as] glóra “to glow (like a cat’s eyes)” [or] Swedish and Norwegian dialect glora “to glow, stare.” The source of gloren [and] glouren may also be from Middle Low German glūren “to be overcast” or Dutch glueren “to leer, peep.” Glower entered English in the 15th century.
This is very similar to our “glaring at someone” which has its roots in Middle English, Middle Dutch and Middle Low German.
I’ve been doing a lot of glowering and glaring, lately. The whole world has gone insane-stupid. ~Vic