In a recent episode of The Lord of the Rings: The Rings of Power, the Orcs are chanting the word "Nampat" during a march.
According to some websites, it could mean either "Death" in Black speech, e.g., see here, or "to pay back" in Quenya, according to Reddit.
So, my question is: what does the word "Nampat" really mean? Canon sources from the books or Tolkien's letters are preferred, but if all fails, informed speculation could also be accepted.