noun. One who denounces; one who threatens or menaces.

noun. One who endeavors to obtain possession of or right to a mine or other land by denouncement.

noun. One who denounces, or declares, as a menace.

noun. One who, or that which, denounces.

"And all the worse for the doomed man, that the denouncer was a well-known citizen, his own attached friend, the father of his wife."

amoebae  annexe  asserter  assertor  conniver  

fulminator  inveigher  vituperator