Whats the origin of the word geezer? - English Language Usage . . . The word probably represents a dialectal pronunciation of the now obsolete guiser ‘someone wearing a masquerade as part of a performance, mummer’ This was a derivative of guise (13th c ), which, together with disguise (14th c ), goes back ultimately to prehistoric Germanic *wīsōn, ancestor of archaic English wise ‘manner’
etymology - English Language Usage Stack Exchange The word gizzard, according to the OED, comes from an Old French word something like giser (modern French gésier); the g of the modern English pronunciation is thought to have come from a variant pronunciation that existed in French (as reflected by an alternate spelling guiser), but which has not been explained