late 14c., "staring fiercely," present-participle adjective from glare (v.). From 1510s of colors, etc., "vivid, dazzling;" meaning "obtrusively conspicuous" is from 1706. Related: Glaringly.
a glaring error
the glaring sun
gland
glanders
glandular
glans
glare
glaring
Glasgow
glasnost
glass
glass-blower
glasses