Cremation is the process of burning a dead body into ashes. In cremate, the word "in" is often used as a prefix to indicate the action of putting a body into a cremation chamber. However, there are several synonyms for the term in cremate, including incinerate, immolate, combust, burn, and torch. These words all refer to the process of burning, but they are sometimes used in different contexts. For example, immolate is often used when referring to a religious or sacrificial burning, while incinerate and combust are more often used in scientific or industrial settings. Ultimately, the choice of word will depend on the context and purpose of the conversation or writing.