‘不屑一顾’ literally means ‘not deigning to cast even one glance’ — it expresses profound disdain or contempt, suggesting something is so unworthy of attention that not even a single look is warranted. The four characters combine tightly: ‘不’ (not), ‘屑’ (to deign, to consider worthy), ‘一’ (one), and ‘顾’ (to look, to glance). Together, they form an idiom emphasizing extreme dismissal rooted in moral, intellectual, or social superiority.

This expression is commonly used in formal writing, literary contexts, or critical commentary — for instance, when describing someone’s reaction to dishonesty, nonsense, or low-quality work. It carries a strong evaluative tone and often implies the subject feels morally or intellectually above what they’re dismissing. While vivid and expressive, it’s rarely used in casual speech and typically appears with subjects who hold firm principles or high standards.