Antonyms for the word "most pervading" would include terms such as infrequent, rare, sporadic, rarefied, and limited. These words suggest conditions where the object or subject in question is not widespread, all-encompassing or present everywhere. Synonyms for pervading typically include words like ubiquitous, universal, and all-encompassing, so the antonyms would have the opposite connotations. When discussing the pervasiveness of something, it is essential to consider the context in which it is used to determine the correct term to describe it. By using the correct antonym, one can highlight the limited scope of something in comparison to its all-encompassing alternative.