The word "callable" has a few synonyms that can be used in different contexts. One synonym is "redeemable," which is often used in finance to describe securities or bonds that can be bought back by the issuer before their maturity date. Another synonym is "recyclable," which is commonly used in environmental conversations to refer to materials that can be reused after processing. In a software or programming context, "invokable" is a synonym for callable, meaning that a function or method can be invoked or called upon to perform a certain task. Overall, these synonyms provide more flexibility and nuance in how the concept of "callable" can be communicated.