This would definitely make you sound like a Korean during a conversation. Let’s look at how to ‘sigh’ like a Korean.

Words

한숨을 (내)쉬다 - to sigh ( Infinitive Verb )

한숨 - a sigh ( Noun )

휴 / 에휴 / 후 / 하 / =3 - signs used to express a sigh during texting ( Interjection )

Phrases

어느 세월에 이 일을 하나 하고 한숨을 푹 내쉬었어요 - She breathed a heavy sigh thinking when on earth she can finish all this work. ( Informal polite )