The word "most ubiquitary" means something that is most commonly found everywhere. There are several synonyms for this word, which include "omnipresent," "ubiquitous," "widespread," "pervasive," "all-encompassing," "prevalent," "everywhere," and "universal." Each of these synonyms has a slightly different nuance and usage, but they all convey the same basic idea that something is incredibly common and omnipresent. These synonyms can be used in a variety of contexts, from describing the presence of a particular substance or product in the market, to referring to a particular culture or trend that has spread globally. No matter the context, these words provide an effective way to describe the prevalence of something in the world around us.