The phrase "shut eyes" can be used to describe closed or tightly closed eyes. There are several synonyms that can be used to replace this phrase. One alternative is "closed eyes," which indicates that the eyes are not open. Another synonym is "tight-closed eyes," which emphasizes the tightness of the closure. "Sealed eyes" or "pressed eyelids" are also acceptable alternatives. "The eyes are shut" can be rephrased as "the eyelids are down," or "the eyes are closed tightly." Regardless of which synonym is used, the intention is to convey that the eyes are not open and that the person is not able to see.