Amparse, amparse: lower set of French class
Ompasse, ompasse: shove it up your pomp ass
Umpasse, umpasse: stick it up your jumped-up ass
Impasse, impasse: stick to English, jackass.
[Sorry. I know it’s a bit mean but the continuing need for the use of this word has turned what was once an endearing characteristic into a bugbear]