Italian word intenzione comes from Latin intentus

Detailed word origin of intenzione

Dictionary entry	Language	Definition
intentus	Latin (lat)	Mindful, attentive (to the situation at hand); intent on (something) (having one's attention fixed on something). Serious, earnest.
intentio	Latin (lat)	Charge, accusation. Exertion, effort. Increase, augmentation. Purpose, intention. Strain, tension.
intenzione	Italian (ita)	Intention, intent, purpose, mind, wish.

Words with the same origin as intenzione