Synonyms for the word "squelcher" can include words such as suppressor, dampener, stifler, quencher or extinguisher. Each of these words can be used to describe something that is used to curb or dampen a particular emotion or sensation. For instance, a suppressor might be used to limit the sound of a gunshot, whereas a quencher might be used to put out a fire. Regardless of the context in which these words are used, they all share a common goal of stifling, limiting, or extinguishing something that is causing discomfort or unease.