However, depending on what you want to convey, you could use suffixes like:
* -ette: This adds a diminutive feel, suggesting a shorter or less formal sermon (e.g., "sermonette").
* -like: This compares something to a sermon, emphasizing its preachy or didactic quality (e.g., "sermon-like").
* -er: This could be used to refer to someone who delivers sermons (e.g., "sermoner"). However, "preacher" is a more common term.
* -ing: This could be used to describe the act of delivering a sermon or the content of a sermon (e.g., "sermoning", "sermoning").
Ultimately, the most appropriate suffix would depend on the specific context and the meaning you are trying to convey.