Idiom: someone couldn’t care less
Note:
Many people use "could care less" but this doesn't make sense. If you could care less it would mean that you have some amount of caring left to give--that's not what this expression is intended.
However, this form is commonly used so don't be surprised if you hear it, especially in spoken English.
— I couldn't care less if all of my friends smoke. I’ll never do it because it’s bad for my health.
— The salesperson is so slow it's obvious she couldn't care less if we buy anything or not.
— My wife wanted to know if we should paint our house gray or blue but I honestly couldn't care less.
— My parents couldn't care less what I do on the weekends as long as I get good grades and stay out of trouble.
— We couldn't care less about your video game competition. Turn off your computer and go to sleep.
— I couldn't care less what we have for dinner as long as we get something to eat soon. I'm so hungry I'm about to pass out.
— It's so annoying that you couldn't care less about anything—I'm so tired of having to make all the plans and decisions in this relationship.
— First you said you couldn't care less where we eat and now that I've made a reservation you decide you hate Thai food.
— When I grew up we couldn't care less about sun protection so I never used sunscreen.
— Many young people feel despondent feeling people couldn't care less about them.
More idioms will be added in the future so check back frequently or sign-up for my free newsletter to learn about new updates to my website.