Able to change freely or unpredictably; versatile, protean, or ever-changing in appearance or behavior.
彼の演技は変幻自在で、どんな役でもこなせる。
His acting is versatile; he can handle any role.
このデザイナーは変幻自在の発想で新商品を生み出す。
This designer creates new products with ever-changing, inventive ideas.
舞台装置が変幻自在に動き、観客を魅了した。
The stage set moved in a chameleon-like way and captivated the audience.