'Xiǎo guǐ' literally combines 'xiǎo' (small) and 'guǐ' (ghost or spirit), but it is not used to refer to supernatural beings. Instead, it's an affectionate, playful term for a mischievous or spirited child—similar to English expressions like 'little rascal', 'little scamp', or 'little imp'. The word carries warmth and fondness, often used by elders, parents, or close family members when teasing or praising a child’s lively personality.

While 'guǐ' alone can have negative connotations (e.g., 'bad person'), the diminutive 'xiǎo' softens it entirely, shifting the tone to endearing rather than frightening or critical. It’s common in informal spoken Chinese and rarely appears in formal writing. The term reflects a cultural tendency to use seemingly 'unflattering' words with affectionate intent—a pattern seen in other terms like '死党' (sworn friend) or '臭美' (to be vain, playfully).