Adjective with variable, or no, meaning; used to flummox one's superiors and betters who will not admit to their total ignorance of the word.
'What do you think of the latest sales figures, Braithwaite?
'Well sir, they could be better; but they're quite snepprotical aren't they.'
'A round of golf tomorrow, Smithers?"
'I'm afraid not Lord Duff. My wife's holding a snepprotical coffee morning.'