Definition from Wiktionary, the free dictionary
- Similar to sauce; having the consistency or texture of sauce.
- Impertinent or disrespectful, often in a way that is regarded as entertaining or amusing; smart.
- She is a loud, saucy child who doesn't show a lot of respect to her elders.
- Impudently bold; pert; piquant.
- Mildly erotic.
- My wife and I enjoyed the dancing, but she found it a little too saucy.
- See also Wikisaurus:cheeky
Derived terms 
impertinent or disrespectful