pre ‧ dict ‧ ive /prɪˈdɪktɪv/ BrE AmE adjective [usually before noun]
[ Word Family: noun : ↑ prediction , ↑ predictability ≠ ↑ unpredictability , ↑ predictor ; adjective : ↑ predictable ≠ ↑ unpredictable , ↑ predictive ; verb : ↑ predict ; adverb : ↑ predictably ≠ ↑ unpredictably ]
formal relating to the ability to show what is going to happen in the future:
Dreams, even vivid ones, have little predictive value.