Where does “antidefamation” come from?

antidefamation (English) comes from English defamation, from Old French diffamacion, from Latin diffāmātiō, from Latin diffāmō, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

antidefamation (English): Opposing the defamation of a particular group....

Definitions

  1. Opposing the defamation of a particular group....

Ancestry of “antidefamation”, step by step

antidefamation traces back through two separate lines of ancestry.

via English defamation

StepLanguageWordMeaning
1EnglishdefamationThe act of injuring another person's reputation...
2Old Frenchdiffamacion
3Latindiffāmātiō
4Latindiffāmōto spread an unfavorable report
5Latindis-asunder, apart, in two; reversal, removal;...
6Latincalceusshoe
7Latincalxlimestone; chalk; the finish line
8Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Ancient Greek χάλιξ