千せん変ぺん万ばん化か

noun, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'

ever-changing; kaleidoscopic; innumerable changes

Describes something that undergoes constant, dramatic, and unpredictable changes. Often used for scenery, situations, or emotions. A yojijukugo with a literary feel.

• 山やまの天てん気きは千変せんぺん万ばん化かで、一いち時じ間かんごとに景色けしきが変かわる。

  The mountain weather is ever-changing; the scenery shifts every hour.

• 彼かれの表ひょう情じょうは千変せんぺん万ばん化かし、何なにを考かんがえているのかわからなかった。

  His expression changed constantly, and I couldn't tell what he was thinking.