At sight refers to something that is immediately and easily recognizable or identifiable. There are many synonyms for this phrase including "on first glance," "upon inspection," "at a glance," and "in one's view." Other synonyms include "in plain sight," "visible," "apparent," and "obvious." These phrases all imply a quick or effortless recognition of something, whether it be a person, object, or situation. Additionally, "at sight" can also be substituted with "immediately" or "instantly," which suggests an instantaneous recognition or identification of something. Regardless of the synonym used, they all convey the idea of being able to quickly and easily perceive something with little or no effort.