IPA: /prɪˈdɪktəbli/
KK: /prɪˈdɪktəbli/
In a way that can be expected or anticipated.
The weather changed predictably, just as the forecast had said.
Predictably → It is formed from "pre-" (meaning before) and "dict" (from Latin "dicere", meaning to say or declare) and the suffix "-ably" (meaning in a manner that can be). The word "predictably" means in a manner that can be said or declared beforehand, indicating something that can be anticipated.
Think of something that can be 'said beforehand' ('pre-' means before and 'dict' means to say) — that's why predictably means it can be anticipated.