Being a jerk doesn't quite capture it
The other day in our friendly office the topic of decimate came up. I think I must have brought up in the middle of one of my rolling-eye-rants about the LSSU list.
One person in the room had never heard that decimate meant (a long time ago) to destroy one tenth. Everyone else had heard that but didn't care. Everyone agreed that as the word is used now it is understood to mean the destruction of almost all and some had assumed it meant more specifically all but one tenth.
I made the point that almost no one uses it today to mean the destruction of one tenth. And if they did mean it that way who would understand them? (There was an on-and-on-and-ongoing ADS-L thread about evidence that anyone uses it to mean 'destroy one tenth' anymore.)
Well some people clearly do. But only because they want to prove that they know the etymology. But that's being an ass. It's obfuscation in the guise of appearing smart. It's showing that you know enough about an etymology to use an original term but not enough about communication (and people) to realize that others expect that you speak with the intention of being understood. This is similar to insisting on using the word niggardly and holding firm to the meaning of cheap or miserly. Yes it does mean that. But it's clear that it will be misunderstood by many. Many.
So the suggestion arose -- and I like it:
We need a word for the act of using a word in order to prove that you know what it has meant in some contexts -- even tho or more likely because you know that people will misunderstand or take offense.
Any suggestions?