duō​biàn

changeable

多变 多變 duō​biàn
changeable adjective
changeable; varied; fickle; constantly changing

In April the weather is still changeable.

multivariate
(math) having or involving several variables
unstable
(of a country or state) to experience frequent changes or turmoil; characterized by domestic instability

Frequency

Movie subtitles
1.31 per million appears in 1% of films
Written text
6.38 per million

Sources