* Root: The word "tyrannical" comes from the Greek word "tyrannos" meaning "ruler," which is the core meaning of the word.
* Suffix: The suffix "-ical" is added to the root to create the adjective form of the word, meaning "relating to" or "characteristic of."
Therefore, while "-ical" is a suffix, there's no distinct prefix in the formation of "tyrannical." It's a single-word formation based on the root "tyrannos."