Here's why it's hard to pinpoint an inventor:
* Organic Language Evolution: Slang terms often develop organically within communities, with no single person claiming credit.
* Multiple Origins: It's possible multiple people independently coined the term around the same time.
* Early Use: The earliest documented use of "chillax" might be lost to the annals of informal conversations or online forums.
While no one definitively "made" the word, its widespread use speaks to the power of language to adapt and create new expressions to capture evolving cultural trends and attitudes.