sassy (adj.)

• audacious
• bluff
• bold
• brash
• brazen
• cheeky
• cocky
• contemptuous
• crusty
• derisive
• disrespectful
• flip
• flippant
• forward
• fresh
• gratuitous
• impertinent
• impudent
• natty
• nervy
• pert
• rude
• saucy
• smart
• spiffy
• spruce
• unabashed
• uncalled-for
• well-groomed