deliciosity

The story

1. Middle French · derived fromdelicieuseté
2. Middle English · inherited fromdelicissite
3. English todaydeliciosity

From Middle English delicissite, deliciouste, deliciuste, diliciousite (“delightfulness; of food: deliciousness; a luxury”), from Middle French delicieuseté (compare Medieval Latin dēliciōsitās) or formed within English from delicious + -osity.