Read the following excerpt from “The Tell-Tale Heart” by Edgar Allan Poe.

It is impossible to say how first the idea entered my brain; but once conceived, it haunted me day and night. Object there was none. Passion there was none. I loved the old man. He had never wronged me. He had never given me insult. For his gold, I had no desire. I think it was his eye! yes, it was this! He had the eye of a vulture --a pale blue eye, with a film over it. Whenever it fell upon me, my blood ran cold; and so by degrees -- very gradually --I made up my mind to take the life of the old man, and thus rid myself of the eye forever.

Which of the following synonyms is closest to the meaning of the word passion in the excerpt above?