The word "contrivers" can be replaced by various synonyms depending on the context in which the word is used. One possible synonym for contrivers is "planners" which emphasizes the creation or development of a detailed plan or strategy. Another synonym for contrivers is "designers" which implies creativity and innovation in coming up with ideas and solutions. "Inventors" is also a possible synonym for contrivers which highlights the ability to create or come-up with novel ideas or solutions. "Devisers" is another suitable synonym for contrivers which emphasizes the ability to invent and arrange plans and designs. Ultimately, the choice of synonyms for contrivers depends on the intended meaning and context of the text.