1 that cannot be predicted because it changes a lot or depends on too many different things 不可预测或预言的: unpredictable weather 捉摸不定的天气The result is entirely unpredictable. 结果根本无法预测。

2 if a person is unpredictable, you cannot predict how he/she will behave in a particular situation （指人）行为不可预测的，难以捉摸的 [OPP] predictable 反义词为predictable➔unpredictability /ˌʌnprɪˌdɪktəˈbɪləti ||; ˌʌnprɪˌdɪktəˈbɪlətɪ/ noun [U]: the unpredictability of the English weather 英格兰天气的反复无常 ➔unpredictably adv