I've been with my Domme for eight months and she's started wanting to do more degradation play than I'm comfortable with. I feel like I can't say no without disappointing her. What do I do?

Submission is a voluntary and ongoing choice, and it does not include the obligation to accept things you have not agreed to or are not comfortable with. A D/s relationship that creates a feeling that setting a limit will disappoint or damage the relationship is one that has drifted from its consent foundations.

The fear of disappointing your Dominant is understandable and very commonly reported, but it is worth examining directly. What exactly are you afraid will happen if you say no? Has she responded badly to limits in the past, or is this a fear based on how much you care about pleasing her rather than anything she has actually done? The answers to those questions matter because they point in different directions.

If she has responded poorly to your limits before, then the relationship needs a frank conversation about consent dynamics, ideally outside any scene context. A Dominant who is hurt or punitive when a submissive sets a limit is not operating in good faith.

If this is primarily your own difficulty with the idea of disappointing her, then practicing limit-setting explicitly is worth doing: tell her directly what you are not comfortable with, and observe that she accepts and respects it. Many submissives who have this experience describe it as both relieving and strengthening to the relationship when they discover their Dominant genuinely welcomes clear communication.

Your discomfort is a hard limit until you actively decide otherwise. That does not change because of how much you care about her.