battle-ax

Example:She's such a scold that everyone avoids her at social gatherings.

Definition:A person who habitually criticizes, upbraids, or expresses disapproval; a scold.

Example:He's always nags me about my lack of punctuality.

Definition:To persistently criticize, remind, or complain in a loud or tiresome way, typically about minor things; to nag someone.

Example:Everyone in the office wasn't a grump today, and the atmosphere was relatively better.

Definition:A person who is in a bad mood; a grumpy person.