Āpó is an affectionate, informal term for 'granny' or 'grandmother', widely used in southern Chinese dialects (e.g., Cantonese, Minnan, and Hakka) and increasingly common in Mandarin speech, especially in family settings. The character 阿 (ā) is a common prefix added to kinship terms to convey intimacy and familiarity — it carries no independent meaning but softens and personalizes the noun. 婆 (pó) literally means 'old woman' or 'maternal grandmother', and when combined with 阿, it becomes a warm, respectful yet cozy address for one’s maternal or paternal grandmother — or sometimes even an elderly female neighbor or family friend.

This term reflects cultural values of familial closeness and intergenerational respect. It’s typically used by children and young adults when speaking directly to or about their grandmother, and rarely appears in formal writing. Unlike the more neutral and standard 祖母 (zǔmǔ) or 奶奶 (nǎinai), āpó evokes regional warmth and everyday tenderness — think of shared meals, bedtime stories, or gentle scolding over steamed buns.