- The definition of defamatory is hurts someone's reputation.
An example of defamatory used as an adjective is in the phrase "defamatory statements," which means statements which can hurt someone's reputation.
Origin of defamatoryMedieval Latin diffamatorius
(comparative more defamatory, superlative most defamatory)
From Middle French diffamatoire, from Medieval Latin diffamatorius
defamatory - Legal Definition