old fogey
From Longman Dictionary of Contemporary Englishold fogeyold fo‧gey /ˌəʊld ˈfəʊɡi $ ˌoʊld ˈfoʊ-/ noun [countable] informal OLD/NOT YOUNGOLD-FASHIONEDsomeone who is boring and has old-fashioned ideas about things, especially someone oldExamples from the Corpusold fogey• Was he laughing at the absurd idea of being an old fogey?• We didn't mind being old fogey, as long as there was no one there reminding us of the fact.• You're showing old fogey potential at a frighteningly young age.• So, here are the observations of this old fogey.• a conservative, bow-tied old fogey