"sauciest" in the adjective sense
1. impertinent, irreverent, pert, saucy
characterized by a lightly pert and exuberant quality
"a certain irreverent gaiety and ease of manner"
2. fresh, impertinent, impudent, overbold, smart, saucy, sassy, wise
improperly forward or bold
"don't be fresh with me"
"impertinent of a child to lecture a grownup"
"an impudent boy given to insulting strangers"
"Don't get wise with me!"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License