Definitions:
Querulous: Whining in an annoying disruptive behavior
Cupidity: An obsessive need or addiction to money or worldly possessions; greedy
Credible: Truthful or honest
Impudence: Bold in a cocky or demeaning way; having a disregard for others
Meritorious: Deserving of high praise, or rewards
Answers:
The positive qualities would be: