The antonyms for the phrase "cry up" include "criticize," "condemn," "disapprove," "belittle," "devalue," "underrate," "downplay," "ignore," "mock," and "ridicule." These antonyms denote negative reactions to something that is usually being praised or esteemed. For instance, to "condemn" something means to express strong disapproval of it, while "ridicule" means to make fun of or laugh at it. Similarly, "downplay" means to make something seem less important, while "belittle" means to reduce someone or something in importance or esteem. These antonyms show the range of negative reactions that people can have towards something that is generally admired or valued.