少许 (shǎoxǔ) literally combines 少 (shǎo, 'few' or 'little') and 许 (xǔ, an archaic particle meaning 'a certain amount'), together conveying the idea of 'a small, indefinite quantity'. It functions primarily as a noun meaning 'a small amount' but is frequently used adverbially to modify verbs or adjectives — for example, 'add a little salt' or 'slightly reduce the heat'. It's neutral in register and common in both spoken and written Chinese, especially in cooking instructions, medical advice, and everyday suggestions.

The term implies imprecision — it’s not a measurable unit like 一勺 (yī sháo, 'one spoonful') but rather a flexible, context-dependent quantity. It often appears in formal or semi-formal contexts where exact measurement isn’t necessary or desired, such as recipes, prescriptions, or polite suggestions. Unlike quantifiers like 一点 (yìdiǎn), 少许 sounds slightly more refined or literary, and is rarely used in casual speech among young people without reason.