Viciate is a term often associated with corruption and damage, and there are several synonyms that can be used in its place. One such synonym is "taint," which suggests a contamination or pollution of something pure or wholesome. Another word that can be used in place of viciate is "spoiled," indicating that something was once good or effective but has since been ruined or made useless. Other synonyms include "corrupt," "debase," and "undermine," all of which suggest the weakening or negation of something that was once strong or positive. Ultimately, the choice of synonym depends on the context and the desired connotations of the text.