Everyone associated with our hobby has their favorite terms and their least favorite ones. Many collectors find fault with the term "never hinged" mostly because it doesn't describe what is really meant. People seeking "never hinged" stamps want perfect gum so that a stamp with disturbed gum that is "never hinged" is not NH at all. The Germans use a term for the gum which translates as "post office fresh" which describes it much better. Many collectors quibble with description terms such as "nibbed" for perfs or with cover collectors being described as postal historians.
My least favorite term or euphemism is not strictly a term applied to stamps but rather one applied to deceased stamp collectors. It is the term "closed albums" followed by an obituary of the collector. We all know what is attempted to be conveyed by the term- a once living member of our collecting fraternity is no longer be with us. But to reduce a life to such a cold circumstance-a closed album- always struck me as adding to the stereotype of philatelists as caring more about stamps than people. Imagine hearing of deceased horse people referred to under the heading "thrown jockeys" or deceased numismatists as "finally slabbed" and you have a good idea of what "closed albums" sounds like to people outside our hobby. So perhaps it is time we thought of a better way of referring to members of our community who are no longer with us.