unscrupulous+smartness
1flippancy — n. 1. Volubility, fluency. 2. Pertness, inconsiderate glibness, unscrupulous smartness, superficial assurance …
2smart — adj., v., n., & adv. adj. 1 a clever; ingenious; quickwitted (a smart talker; gave a smart answer). b keen in bargaining; quick to take advantage. c (of transactions etc.) unscrupulous to the point of dishonesty. 2 well groomed; neat; bright and… …
