complementando

Complementando is the gerund form of the Portuguese verb complementar, meaning to complete, to supplement, or to add elements that make something more complete. As a grammatical form, it signals an ongoing action of adding or enhancing, rather than a finished result.

In grammar, complementando is used with auxiliary verbs to express progressive aspect, especially in Brazilian Portuguese. For example: Ele está complementando o relatório com dados novos. It can also function in more descriptive roles to emphasize the act of providing a supplement, though it most often appears in sentences with estar or as part of a verbal periphrasis. In formal writing, the gerund should be used judiciously, as it can come across as casual or vague when overused.

Originating from complementar, the term is related to the noun complemento, which denotes a supplement or a necessary element that completes something. The concept of complementos spans fields such as grammar (complementos in a sentence), logic (set complement), and information processing (complementary data). Overall, complementando conveys a continuous process of adding to or enhancing an existing entity.