HoLy In Yeeng Voyss Sownd Chahrz Iz HohLee Uv HohLee SpihriT

ETymoLogy Uv Wrd: holy (adj.)

Old English halig "holy, consecrated, sacred; godly; ecclesiastical," from Proto-Germanic *hailaga-…from PIE *kailo- "whole, uninjured" (see health)…

Primary (pre-Christian) meaning is not possible to determine, but probably it was "that must be preserved whole or intact, that cannot be transgressed or violated," and connected with Old English hal (see health) and Old High German heil "health, happiness, good luck" (source of the German salutation Heil). Holy water was in [Old English.

Holy has been used as an intensifying word from 1837; in expletives since 1880s (such as holy smoke, 1883, holy mackerel, 1876, holy cow, 1914, holy moly etc.), most of them euphemisms for holy ChrisT or holy Moses. HoLy GhosT was in Old English (in Middle English often written as one word)…