glower

Glower is a verb meaning to look or stare with anger or sullen annoyance. It can be used transitively, as in "to glower at someone," or intransitively, as in "he glowered, refusing to speak." A glower typically conveys a prolonged, unfriendly, or menacing mood rather than a brief look.

As a noun, a glower refers to a person who glowers, though this usage is not as common as the verb form. The present participle glowering is widely used as both an adjective and a verb: "a glowering look" or "the manager, glowering at the spreadsheet."

Usage notes: Glower emphasizes mood and facial expression more than duration or brightness and is often associated with sustained displeasure or disapproval. It is related to, but distinct from, glare, which can imply brightness or a more intense, unblinking stare.

Etymology: The origin of glower is uncertain. The term appears in English from around the late 16th or early 17th century and is often linked to glare, with the -er suffix forming a noun or verb, though precise derivation is not settled.

See also: glare, scowl, frown.