unpredictable
/ˌʌnprɪˈdɪktəbəl/
adjective
- Not able to be known or guessed in advance; likely to change suddenly and unexpectedly.
- Investing in cryptocurrency is risky because the market is so unpredictable.
- Her unpredictable mood made it hard for her friends to know how she would react.
- The weather in spring is often unpredictable, with sunshine one minute and rain the next.
Synonyms
Antonyms
noun
- A person or thing that is not predictable; something that behaves in an unexpected way.
- He was known as the unpredictable of the group, always surprising everyone with his choices.
- In this game, the dice are the great unpredictable, changing the outcome every roll.
- The stock market is full of unpredictables that can ruin even the best plans.