Where does “defamen” come from?

defamen (Middle English) comes from Anglo-Norman defamer, from Latin diffāmō, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “defamen”, step by step

Step	Language	Word	Meaning
1	Anglo-Norman	defamer	—
2	Latin	diffāmō	to spread an unfavorable report
3	Latin	dis-	asunder, apart, in two; reversal, removal;...
4	Latin	calceus	shoe
5	Latin	calx	limestone; chalk; the finish line
6	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Words derived from “defamen”

defame
defamer
defamous
defameth
defamest

Every word from Ancient Greek χάλιξ →Every word from Latin dis- →Every word from Latin calx →