Here are some common words derived from "dic" and their meanings:
* Dictate: To say or read aloud for someone to write down.
* Dictation: The act of speaking or reading aloud for someone to write down.
* Dictionary: A book containing a list of words and their meanings.
* Verdict: A judgment or decision.
* Indict: To formally accuse someone of a crime.
* Predict: To say what will happen in the future.
* Contradict: To say the opposite of something.
* Benediction: A blessing.
* Dictatorship: A form of government in which one person or a small group has absolute power.
As you can see, the root word "dic" often relates to the act of speaking, communication, or making pronouncements.