Here's why:
* Prefixes are word parts added to the beginning of a word to modify its meaning. "Ingenious" doesn't have a recognizable prefix like "un-", "re-", or "pre-".
* Suffixes are word parts added to the end of a word. "Ingenious" doesn't have a common suffix like "-ing", "-ly", or "-ness".
Origin: The word "ingenious" comes from the Latin word "ingenium," meaning "inborn quality" or "natural talent." It was adopted into English and evolved over time to mean "clever" or "inventive."
So, while "ingenious" doesn't have a typical prefix or suffix, its meaning is rooted in a Latin word that has contributed to its modern form.