This is the 4862nd most frequent Korean word.
괜찮다
"괜찮다" means "to be okay, fine, or alright."
괜찮다 here is used to express something being acceptable or okay.
이 책은 괜찮아요.
This book is alright.
괜찮다 is used to inquire about someone's physical condition.
몸은 괜찮으세요?
Is your body okay?
괜찮다 expresses tolerance or permission regarding a specific situation.