1 adjectives to describe defamers

He is [Greek] (the slanderer); Satan, the spiteful adversary; the old snake or dragon, hissing out lies, and spitting forth venom of calumnious accusation; the accuser of the brethren, a murderous, envious, malicious calumniator; the father of lies; the grand defamer of God to man, of man to God, of one man to another.

1 adjectives to describe  defamers