Added 9 October 2026 slanderous /ˈslændəɹəs/ adjective Categories: Describing WordsRare Words adjective ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about slanderous at Wordnik → Where our words come from → (used of statements) harmful and often untrue; tending to discredit or malign. Related Words: calumniatorycalumniousdefamatorylibelouslibellousdenigrativedenigratoryharmfuldenigratingmendaciousinjuriousscandalous Back to today's word