안 괜찮은지

whether it's not okay

→ 안
phrase Uncommon #14,674
whether it's not okay 안 괜찮아 means “not okay”; adding -은지 makes it part of an indirect question.
KO: 그가 정말 안 괜찮은지 확인해 봐.
EN: Check whether he's really not okay.