The phrase "staring at" can be replaced with various synonyms to convey a similar meaning. Some options include "gazing," "peering," "fixating," "scrutinizing," "observing," "examining," and "surveying." These words can be used in different contexts depending on the intensity or duration of the stare. For example, "gazing" may imply a more casual or fleeting look, while "scrutinizing" may suggest a longer and more intense observation. Using synonyms for "staring at" can add variety and nuance to writing, allowing for a more vivid description of visual perception.