Prefixes:
* Hyper-: Implies excessive or extreme, so "hyper-headed" could work, but it's a bit awkward.
* Over-: Similar to "hyper," "over-heated" could work, but it focuses more on a temporary state.
* Fiery-: While not strictly a prefix, "fiery-tempered" is a common phrase and conveys the same basic meaning.
Suffixes:
* -ish: "Hotheaded-ish" is informal but can be used to soften the intensity of the description.
* -ness: "Hotheadedness" is a noun form and describes the quality of being hotheaded.
Other Options:
* Quick-tempered: This phrase directly captures the rapid anger associated with being hotheaded.
* Impulsive: This emphasizes the lack of thought and control often associated with hotheaded behavior.
* Volatile: This term suggests a quick change in emotions and potentially explosive anger.
Ultimately, the best choice depends on the context and the level of formality you're aiming for.