'小仔' (xiǎo zǎi) is an informal, affectionate, or sometimes teasing term for a young male—typically a boy, teenager, or young man. Literally, 小 means 'small' or 'young', and 仔 (common in Southern Chinese dialects like Cantonese and Minnan-influenced Mandarin) means 'guy', 'fellow', or 'lad'. Though originally regional, it’s increasingly heard in casual Mandarin speech, especially among peers or elders addressing younger males with familiarity or light-hearted condescension.

The term carries no strong negative connotation but leans colloquial and familiar—it’s unsuitable in formal settings, academic contexts, or when speaking to strangers or superiors. It often implies youthfulness, energy, or inexperience, and may be used playfully ('Look at that little guy!') or gently reproachfully ('Come on, little guy, don’t be shy!'). Unlike neutral terms like 年轻人, 小仔 adds warmth or mild paternalism—and occasionally a hint of rustic charm.