There are many words these days that are rarely used - and that is a great shame as even the simple act of their enunciation can bring on a smile, such is their irrefragable brilliance. Go on, drop a few of these words into your next conversation and ensure their preservation.
You are guaranteed to be the cynosure of attention and contesseration will be guaranteed. In other words you will be the life and soul of the party and make many friends.