| Adj. | 1. | unpredictable - not capable of being foretold uncertain - not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain" predictable - capable of being foretold |
| 2. | unpredictable - unknown in advance; "an unpredictable (or indeterminable) future"indeterminable, undeterminable - not capable of being definitely decided or ascertained | |
| 3. | unpredictable - not occurring at expected times sporadic - recurring in scattered and irregular or unpredictable instances; "a city subjected to sporadic bombing raids" |