Board Thread:Wiki Running/@comment-3225604-20150806111049/@comment-14966981-20150806121513

Flockky II wrote: IMO, The IH difficulty should be replaced by Extremely Hard, but the Nearly Impossible difficulty should be there (suitable for 735V1). For what I've noticed in researches, Nearly impossible is meant to be a level that is almost impossible to fail without boosters, and extremely is meant to be in a very great degree, looking similar to insanely.

http://www.thesaurus.com/browse/insanely

Madly is related to Insanely, and one of its synonym terms is extremely.