"Xray eyes" refers to an ability to see through objects or people's intentions. Some synonyms for this phrase include "keen vision", "penetrating gaze", "discerning perception", "perceptive insight", "intuitive awareness", or "sharp scrutiny". These words all imply a heightened sense of observation or intuition that allows one to see beyond the surface and deep into the core or motives of a person or situation. These synonyms can also suggest a sense of caution or wariness, as having xray eyes can also mean being able to spot any potential dangers or threats that others might miss.