"Skinned out" is a colloquial phrase that can mean "stripped bare" or "removed the skin." However, there are several synonyms that can be used in its place. One option is to say "peeled," which refers specifically to the act of removing the skin from a fruit or vegetable. Another synonym is "defleshed," which can be used to describe the process of removing skin, muscle, or tissue from an animal carcass. One could also use "flayed," which is a verb that describes the act of removing someone's skin and can be used metaphorically or literally. Overall, there are several words that can be used to convey the same meaning as "skinned out" depending on the context.