luster

The word 'luster' entered English in the early 16th century from the Middle French 'lustre', which itself derived from the Italian 'lustro'. Its ultimate source is the Latin verb 'lustrare', meaning 'to make bright or pure, to illuminate'. This Latin root is connected to the Proto-Indo-European base leuk-, meaning 'light, brightness', which is the ancestor of many light-related words. The semantic journey moved from the literal act of illuminating to the resulting state of having a bright, shining surface, and later extended metaphorically to describe brilliance or glory in reputation or achievement.

Structure: lust (shine) + er (noun suffix) 'lust' originates from the Latin verb 'lustrare', meaning 'to brighten, illuminate'. The suffix '-er' is an English agentive or instrumental noun suffix, here forming a noun denoting something that has the quality of the root.