Negação in Portuguese grammar is the process of constructing negative sentences. In Portuguese, negation can be achieved by using the adverb “não” (no, not) before the verb. However, there are other negative words that may be used in various contexts to convey a negative meaning, such as “nada” (nothing), “ninguém” (nobody), “nenhum” (none), and “jamais” (never). Learning how to use these negative constructions is essential for having a richer understanding of the Portuguese language.