Holy Healthy Halloween
Holy, healthy, and Halloween are part of a large family of words, all of which ultimately descend from the Proto-Germanic *hailaz “healthy, whole, complete, sound”. The direct descendent of that root is the Modern English “whole”. The w in the spelling whole has no etymological basis, and appears to have been added to distinguish it from the unrelated noun hole. In northern dialects, it became hale, meaning “healthy, sound”, which is now dated. In Old Norse, this root became heill, which was borrowed into English as hail in the sense of “greeting”, from the practice of wishing good health as a greeting (compare the Latin salve, used as a greeting, literally meaning “be healthy!” or “be well!”)
A verb *hailijaną, was derived from this adjective, with the meaning “make whole, make healthy”, which became the Modern English verb heal. And a noun form *hailiþō was also formed from that root, meaning “wholeness” or “health”. This is the ancestor of the Modern English health, and from that was formed the adjective healthy
Another suffix, *-gaz, “being, having, or doing X” was used to form the word *hailagaz, “holy, sacred”, which became Modern English holy. A noun derived from this adjective, *hailagô (”holy person or thing”), became the now-obsolete noun hallow, “a saint”, which is preserved in the older name All Hallows’ Day for the festival more commonly known today as All Saints’ Day on November 1. The night before All Hallows’ Day was All Hallows’ Even (Even in this context being an alternative form of Evening, or Eve), which came to be contracted to Halloween. A verb *hailagōną derived from this source became the Modern verb hallow, the two forms eventually merging phonetically

















