The word "to eye" is a versatile verb that can be used in many different contexts. Depending on the situation, there are many synonyms that can be used to convey a similar meaning. For example, "to gaze" or "to scrutinize" could both be used as synonyms for "to eye" when referring to someone staring intently at something. "To ogle" can be used to describe someone looking at something with lust or desire. "To survey" or "to inspect" can be used to describe someone carefully examining something. "To watch" or "to monitor" can be used to describe someone observing something over an extended period of time. There are many other synonyms for "to eye" depending on the specific meaning needed and context of the sentence.