Oh Yaaaay lets depend on the wiki!

A direct quote from your source:

The name "Hyper Notorious Monster" is incorrect. The name Hyper was given the the abbreviation HNM when the new North American players could not figure out what else the "H" Could stand for. The term HNM given to certain Notorious Monster by the Japanese community that had been playing for many years prior to the arrival of FF XI in North America. The term HNM stands for "Honorary Notorious Monster"

Final Fantasy XI (ファイナルファンタジーXI Fainaru Fantajī Irebun?), also known as Final Fantasy XI Online, is a MMORPG developed and published by Square (later Square Enix) as part of the Final Fantasy series. It was released in Japan on Sony's PlayStation 2 on May 16, 2002, and was released for Microsoft's Windows-based personal computers in November 2002. The PC version was released in North America on October 28, 2003, and the PlayStation 2 version on March 23, 2004.
LOL

"HYPER" came from the JPs. Higher more than likely came from EU only because EU players play and label FF awkwardly, imo.

Btw I was in an international LS on FFXI.. I wouldn't be pulling this out of my ass. I speak what I know and know what I speak. Otherwise I stfu and observe.

Anyways, I'm done trolling with the facts.

kthnxbye