half-hearted about (someone or something)

half-hearted about (someone or something)

Uninterested in or apathetic about someone or something. I'm procrastinating because I'm half-hearted about my topic for the assignment. Who are the other candidates for the position? I'm half-hearted about this one.

halfhearted (about someone or something)

unenthusiastic about someone or something. Ann was halfhearted about the choice of Sally for president. She didn't look halfhearted to me. She looked angry.