懒散 (lǎn sǎn) is an adjective describing a state of being both idle and slack—lacking energy, motivation, or discipline. The first character 懒 means 'lazy' or 'unwilling to work', while 散 conveys 'loose', 'disorganized', or 'lacking focus'. Together, they form a compound that emphasizes not just laziness but also a careless, unfocused attitude toward responsibilities or routines.

This word is commonly used to describe people’s behavior or habits—especially in contexts like work, study, or daily life—where consistency and diligence are expected. It carries a mildly negative connotation and often implies criticism or gentle disapproval, though it’s less harsh than words like 懒惰 (lǎn duò). 懒散 can modify nouns directly (e.g., 懒散的态度) or function predicatively (e.g., 他最近很懒散). It frequently appears in advice, self-reflection, or observations about declining effort over time.