‘瞎子’ literally combines 瞎 (xiā), meaning 'blind' or 'vision-impaired', and 子 (zi), a common noun suffix that adds a colloquial, sometimes slightly informal or affectionate tone. While it directly denotes a person who is blind, it is primarily used in spoken, everyday Mandarin—not formal writing or medical contexts—where terms like 失明者 (shīmíng zhě) or 视力障碍者 (shìlì zhàng'ài zhě) are preferred. The word carries no inherent disrespect when used neutrally among friends or in storytelling, but sensitivity is advised depending on context and relationship.

Historically, 瞎子 appears in folk tales, proverbs, and regional dialects—for example, the idiom ‘瞎子摸象’ (xiāzi mō xiàng, 'the blind men and the elephant')—highlighting its deep roots in oral culture. It’s rarely used as a self-reference today, and speakers often choose more respectful alternatives in professional or empathetic settings.