The weather in the mountain region is unpredictable, so hikers must carry gear for all conditions.
山区的天气不可预测，因此徒步者必须携带适合各种条件的装备。
Which choice best defines “unpredictable”?
C — Not able to be predicted. “unpredictable” means not able to be predicted.
Which word means “not able to be predicted”?
D — unpredictable. “unpredictable” means not able to be predicted.
unpredictable — not able to be predicted. In Chinese: 不可预测的.
unpredictable is pronounced /ˌʌnprɪˈdɪktəbl/.
The weather in the mountain region is unpredictable, so hikers must carry gear for all conditions. (山区的天气不可预测，因此徒步者必须携带适合各种条件的装备。)
erratic, volatile, capricious — all close in meaning to unpredictable (not able to be predicted).
predictable, stable — each the opposite of unpredictable (not able to be predicted).
Yes. unpredictable is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.