The term "deep set" refers to something that is deeply or firmly embedded. Its antonyms would be words that indicate something being on the surface or not deeply embedded. These antonyms could be words like superficial, shallow, light, fleeting, or fleeting. These words suggest that something might be less substantial or less deeply rooted than what deep set implies. While deep set might be used to describe a person's personality or physical features, the antonyms can be used to describe a range of things, from emotions to objects. Using antonyms can help to diversify language and give nuance to descriptions.