"Complementarily" Natural Recordings by Native Speakers
In a complementary manner, in addition to something else, to enhance or complete it.
A complaint is an expression of dissatisfactory or unsatisfactory remarks about a person, organization, act, product, or service that arouses dissatisfaction or discontent. It can also refer to a formal expression of discontent or grievance, often made in writing, to an organization, government agency, or individual responsible for a perceived wrongdoing or injustice.