(plural not attested)
An adaptation of the Ancient Greek ψιθύρισµα (psithurisma) or ψιθυρισµός (psithurismos), from ψιθυρίζω (psithurizō, “I whisper”), from ψίθυρος (psithuros, “whispering”, “slanderous”).
"psithurism." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/psithurism>.
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