Would you call someone hooked on oxicondone an oximoron?

An oxymoron is a figure of speech that juxtaposes two contradictory terms. For example, "deafening silence" or "jumbo shrimp."

An "oxymoron" is not the correct term for someone who is addicted to oxycodone. The correct term is an "oxycodone addict" or someone with an "opioid use disorder."