The term "avigator" is a relatively uncommon word and may not have many recognized synonyms. However, one possibility is "navigator" which refers to a person or system that helps guide or navigate a vehicle or person through unfamiliar territory. Other synonyms could include "guide," "pilot," "map-reader," "navigator," or "wayfinder." Each of these terms emphasizes the role of a person or technology in helping to guide a person or vehicle towards a desired destination. However, it is worth noting that the term "avigator" may have unique connotations or nuances that are not easily captured by these other synonyms.