The word "Praiseer" is not widely used in the English language, and as such, there are few antonyms for it. Nevertheless, we can consider some words that are the opposite of praise. Criticism, disapproval, censure, condemnation, reproach, disdain, contempt and derogation are some of the antonyms of praise. While praise is expressing approval or admiration for someone or something, criticism is the opposite, and it refers to the act of finding fault or flaws with something or someone. Disapproval and censure mean to express a negative view of someone or something, while contempt suggests an intense dislike or disrespect for someone or something. Reproach and condemnation both refer to criticism that is harsh, disapproving, or reproachful.