Geezer is a slang term used to describe an elderly person, usually one who is perceived as being out of touch with modern trends. FOGY, CODGER, FOGEY, COOT, ACYG, DOTARD, OLDFOGY, and OLDGOAT are all synonyms for geezer, each with slightly different connotations. FOGY is an informal term for an elderly person who is perceived as being out of touch with modern trends, while CODGER is an informal term for an elderly man who is perceived as being eccentric or cantankerous. FOGEY is an informal term for an elderly person who is perceived as being old-fashioned or conservative, while COOT is an informal term for an elderly person who is perceived as being absent-minded or forgetful. ACYG is an acronym for 'ancient CODGER you'd get', which is a humorous way of referring to an elderly person. DOTARD is an archaic term for an elderly person who is perceived as being senile or foolish, while OLDFOGY and OLDGOAT are both informal terms for an elderly person who is perceived as being stubborn or set in their ways.