Englishdefamatory
adjective
there were defamatory statements in the book:
libellous, slanderous, defaming, calumnious, calumniatory, vilifying, traducing, scandalous, scandalmongering, malicious, vicious, backbiting, muckraking, abusive, maledictory, maledictive;
disparaging, denigratory, detracting, derogatory, censorious, critical;
insulting, slurring, injurious;
informal mud-slinging, bitchy, catty;
archaic contumelious.
▷antonyms complimentary.
defamatory Oxford Dictionary of English