"Throw in the shade" is a colloquial phrase that means to criticize, insult, or belittle someone in a subtle or indirect manner. There are various synonyms that can be used in place of this expression. For instance, you can use "demean," "disparage," "deride," or "belittle." Other synonyms for "throw in the shade" include "mock," "ridicule," "sneer," or "taunt." You can also use "cast aspersions," "besmirch," "slight," or "snub" to replace the phrase "throw in the shade." In conclusion, having a diverse vocabulary can help you express yourself more effectively and efficiently in different contexts.