Synonyms of the word 
PREDICTABILITY → CERTAINTY
predictability
- n. The characteristic of being predictable.
certainty
- n. The state of being certain.
- n. An instance of being certain.
- n. A fact or truth unquestionably established.
If you are interested in words, visit the following sites :
- wiktionary.org/predictability For complete definition of a word
- 1word.ws/predictability to play with words, suffixs, prefixs, etc.