There are multiple definitions - click on the translation that matches your context.

afirmação

substantivo

full

averment

noun

Definitions of averment

an allegation that is made during legal proceedings

A party shall state in short and plain terms the party's defenses to each claim asserted and shall admit or deny the averments.

the act of saying that something is true, especially in an official context

An affidavit or averment shall be sufficient evidence.