Where does “déguisement” come from?

déguisement (French) comes from French déguiser, from Old French desguiser, from Old French des-, from Latin dis-, from Latin calceus, from Latin calx, from Ancient Greek χάλιξ — small stone, pebble; gravel, rubble.

déguisement (French): disguise, costume; camouflage; fancy dress

Definitions

disguise, costume; camouflage; fancy dress

Ancestry of “déguisement”, step by step

Step	Language	Word	Meaning
1	French	déguiser	to disguise
2	Old French	desguiser	Alternative form of desguisier
3	Old French	des-	de-; dis-
4	Latin	dis-	asunder, apart, in two; reversal, removal;...
5	Latin	calceus	shoe
6	Latin	calx	limestone; chalk; the finish line
7	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

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