One synonym for the word "moisty" is damp, which refers to something that is slightly wet or moist. Another synonym is humid, which describes an environment that is moist and somewhat stifling. Other words that can be used to describe something that is moist or slightly wet include moistened, dampened, dampish, dewy, wet, and soggy. These words can be used in a variety of contexts, from describing the weather to talking about food or other materials that have become wet or damp. Choosing the right synonym can help to convey a precise meaning and create a more vivid picture in the reader's mind.