This is the 498th most frequent Italian word.
felice
Happy.
Felice is used as an adjective describing the subject's emotional state.
Sono felice quando vedo il sole.
I am happy when I see the sun.
Felice is used as an adjective describing the emotional result of an act on someone else.
Ho reso un amico felice con un piccolo regalo.
I made a friend happy with a small gift.
Felice illustrates a general potential state achieved by someone.