When it comes to expressing dissatisfaction, there is no shortage of synonyms for the phrase "registering a protest." Some alternatives include "voicing dissent," "objecting" or "opposing." The phrase "making a stand" or "taking a stance" can also convey the same sentiment. One can also "complain" or "raise objections" to show their dissatisfaction. Choosing the right synonym depends on the context, tone, and level of formality desired. Whatever the wording, the aim remains the same: to convey a message of displeasure and draw attention to the issues at hand. Successful communication relies on skillful use of language, and choosing the right word can help ensure that one's protest is heard and taken seriously.