"Wear the trousers" is a phrase commonly used to describe someone who is in charge or has authority in a particular situation. However, this phrase can be rather gender-biased as it implies a male-dominated society or relationship. Therefore, using alternative synonyms such as "call the shots", "be the boss", "hold the reins", "be in control" or "have the upper hand" could be more appropriate in situations where gender equality is important. These phrases convey the same message without promoting gender stereotypes or excluding members of society, allowing for a more inclusive and diverse vocabulary.