unpredictable

US /ˌʌn.prɪˈdɪk.tə.bəl/
UK /ˌʌn.prɪˈdɪk.tə.bəl/
"unpredictable" picture
1.

不可預測的, 變幻莫測的

not able to be foreseen or predicted; variable

:
The weather in this region is highly unpredictable.
這個地區的天氣非常變幻莫測
His behavior has become increasingly unpredictable.
他的行為變得越來越難以預測