"Glowering" is employed in literature to convey a penetrating, often hostile, look that speaks volumes about a character's inner emotions without needing explicit explanation. It evokes an image of simmering anger, disdain, or suspicion, setting an atmospheric tone that can foretell conflict or power dynamics. In some narratives, such as when mutual animosity is depicted with characters staring each other down [1] and [2], the term underscores tension and deep-seated disapproval. Elsewhere, a solitary figure’s advancing glower might silently signal menacing intent or a brewing outburst [3], or express suppressed fury in a more intimate confrontation [4]. This layered use of "glowering" enriches character interactions, imbuing scenes with an intensity that lingers in the reader’s mind.