Etymology of the English word destrier
the English word destrier
derived from the Old French word destrier
derived from the Latin word dexter (favorable, fortunate, portentous; favorable, fortunate, pretentious; right, on, to the right hand)
derived from the Proto-Indo-European root *deks-
derived from the Old French word destre
derived from the Anglo-Norman word destrer
derived from the Latin root *dextrarius