Klavern is a word that has a negative connotation as it refers to a secret meeting or gathering of the Ku Klux Klan. It's important to note that the Ku Klux Klan is a white supremacist organization with a long history of violence and bigotry. Therefore, finding synonyms for the word "klavern" can be challenging, as it's not a term that should be associated with any positive connotations. However, some possible synonyms could include "KKK gathering," "Klan meeting," or simply "white supremacist gathering." It's essential to use language carefully and avoid normalizing or minimizing the dangerous beliefs and actions of these extremist groups.