Fakest can be synonymous with a range of terms that convey insincerity, falseness, or deception. Some possible synonyms for fakest include: phony, fraudulent, counterfeit, artificial, insincere, dishonest, disingenuous, pretentious, sham, feigned, fabricated, and false. These words all have slightly different connotations and shades of meaning, but they all share the common thread of referring to something or someone that is not genuine or authentic. Depending on the context, different synonyms may be more appropriate or effective, so it's important to choose the right word to convey the intended meaning.