Precontrived, meaning something that has been arranged in advance or pre-planned, has a variety of synonyms that can be used for different contexts. One option is "prearranged," which implies that something has been organized and agreed upon before it actually takes place. Another potential synonym is "predetermined," which suggests that a decision has been made beforehand that influences the outcome. "Pre-established" could also be used, particularly in a legal sense to refer to a pre-existing agreement or contract. Other possibilities include "premeditated," "planned out," "preplanned," "preresolved," "predesigned," and "prearranged." Depending on the particular meaning that needs to be conveyed, there are many synonyms available to substitute for the word "precontrived".