Where does “desputer” come from?

desputer (Old French) comes from Latin disputo, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

Ancestry of “desputer”, step by step

Step	Language	Word	Meaning
1	Latin	disputo	I estimate or compute; I discuss, debate or...
2	Latin	dis-	asunder, apart, in two; reversal, removal;...
3	Latin	calceus	shoe
4	Latin	calx	limestone; chalk; the finish line
5	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Words derived from “desputer”

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