querulants

Example:The service department was overwhelmed with a large number of querulant and complainers needing constant attention and patience.

Definition:People who frequently express dissatisfaction or complaints.

Example:The project team encountered a few murmurers among the team members who continually complained about the project's requirements.

Definition:People who grumble or express discontent in a low, continuous voice.

Example:The property owner had to deal with a grousers neighbor who complained about every aspect of the building's maintenance.

Definition:People who express dissatisfaction with a continuous or repetitive complaint.