Correct

多变

/ duōbiàn / 
Strokes

Definition

fickle/multi-variate (math.)

Example

As a Verb

be changeable/fickle/varied

1
Duōbiàn
多变
de
的
xīnsi
心思

mobile mind

2
Duōbiàn
多变
de
的
tiānqì
天气

changeable/capricious/fickle weather