Agiotage is a term that is uncommonly used in everyday language, and as such, there may not be many synonyms readily available. However, some possible alternatives that could be used in some contexts could include terms such as speculation, price manipulation, or price gouging. In some cases, the term could also be used more broadly to refer to financial or investment-related terminology, in which case synonyms could include terms such as trading, investment, or finance. Ultimately, the best choice for a synonym for agiotage may depend on the specific context in which the term is being used and the intended meaning or nuance that the writer wants to convey.