have half a mind to do something have half a mind (to do something) 1. something that you say to a child who you are threatening with punishment. It's the second time this month I've caught you smoking. I've half a mind to report you to your parents! 2. if you have half a mind to tell someone something unpleasant, you are very seriously thinking about telling them. I've half a mind to tell her to rewrite the whole report it's so bad. |