艰辛 (jiān xīn) is an adjective meaning 'arduous' or 'full of hardship', describing experiences marked by great difficulty, effort, and suffering. The character 艰 (jiān) means 'difficult' or 'hard to accomplish', often implying obstacles or resistance; 辛 (xīn) originally meant 'bitter' or 'pungent', and in compound words it conveys 'toil', 'suffering', or 'painful effort'. Together, they intensify each other—neither character is used alone with this exact nuance—and form a literary, slightly formal term for profound, sustained hardship.

This word commonly modifies nouns like 经历 (experience), 岁月 (years), 生活 (life), or 道路 (path), and appears frequently in narratives about personal growth, historical struggles, or socioeconomic challenges. It carries emotional weight and respect for endurance, often evoking admiration or solemn reflection—not mere inconvenience, but deep, prolonged adversity.