微喘 (wēi chuǎn) literally combines 微 (wēi), meaning 'slight' or 'subtle', and 喘 (chuǎn), meaning 'to pant' or 'short, labored breathing'. Together, it describes a mild, barely noticeable panting — often indicating light physical exertion, mild respiratory discomfort, or early signs of breathlessness. Unlike heavy panting (大喘 or 气喘吁吁), 微喘 suggests restraint and subtlety; it’s commonly used in medical contexts to describe borderline or non-distressing respiratory symptoms, or in literary descriptions to convey quiet fatigue or tension.

This term appears frequently in clinical notes, health reports, and descriptive writing — especially when precision matters. It is not typically used in casual speech among friends; instead, speakers might say '有点喘' or '呼吸有点急' in everyday conversation. 微喘 carries a neutral-to-slightly formal register and is more common in written Chinese than spoken.