The term "vicious conjugate" refers to a combination of words that have a negative or harmful connotation. Synonyms for this phrase can vary depending on the context in which it is used. One possible synonym is "malevolent pair", which suggests a twosome of words with ill intentions or a harmful impact. Another synonym could be "sinister blend", indicating a mixture of words that evokes a sense of darkness or maliciousness. Additionally, the phrase "harmful combination" can be another way to describe a vicious conjugate, emphasizing the detrimental effect of such paired words. Each of these synonyms conveys the idea of a potent fusion of words that carries negative implications.