無常（巴利語：अनिच्चा，anicca，梵語：अनित्य，anitya，藏語：མི་རྟག་པ་，威利轉寫：mi rtag pa，THL：mitagpa），佛教術語，是常的反義字，字面意義為變異，指為一切世間萬物終將變異，無常存者[1]。是一切有為法的共相，為三相之一，即空性。無常道出一切皆不真實和不持久。
https://zh.wikipedia.org/zh-tw/%E6%97%A0%E5%B8%B8_(%E4%BD%9B%E6%95%99)
Impermanence
The Pali word for impermanence, anicca, is a compound word consisting of "a" meaning non-, and "nicca" meaning "constant, continuous, permanent".[1] While 'nicca' is the concept of continuity and permanence, 'anicca' refers to its exact opposite; the absence of permanence and continuity. The term is synonymous with the Sanskrit term anitya (a + nitya).[1][2] The concept of impermanence is prominent in Buddhism, and it is also found in various schools of Hinduism and Jainism.
