fault-finding
noun
• continual criticism, typically concerning trivial things.
• "the traditional manager will attempt to get results by fault-finding"
Similar:
criticism,
captiousness,
cavilling,
quibbling,
niggling,
pedantry,
hair-splitting,
complaining,
grumbling,
carping,
moaning,
whining,
bleating,
nitpicking,
griping,
grousing,
grouching,
bellyaching,
overnice,
• the investigation of the cause of malfunction in machinery, especially electronic equipment.