The term "line of sight" refers to the straight path between an observer and a target. Synonyms for "line of sight" include "direct view," "visual pathway," and "unobstructed view." Additionally, "line of vision" and "sightline" can also be used interchangeably with "line of sight." These terms are commonly used in fields such as defense, astronomy, and photography, where having an unobstructed view of a particular object or location is crucial. By understanding these synonyms for "line of sight," one can effectively communicate the importance of having a clear and unobstructed view when engaging in various activities and professions.