www.alphadictionary.com

I love this word. With corporate buggery at its pinnacle, this time of year/season, most brown nosing up and comers, seek to secure such word. From Latin to French, ( my latin is oxidised) , reminds me of the latin 'sine qua non' (that which is without?' need help on this one(1).

http://www.yourdictionary.com/ahd/s/s0423300.html

Literally without which no, a requirement without which nothing can be effected.

Brazilian dude