Origin: Latin suffix -able
Unpredictable has 5 different meanings across 1 category:
An unpredictable thing.
"The weather has been so unpredictable that we had to cancel our picnic plans twice in a row."
not capable of being foretold
"The weather has been unpredictable, making it impossible to plan our weekend hike."
Unable to be predicted.
"The weather forecast was completely unreliable, leaving us unable to predict if our picnic would happen tomorrow."