1. have a frog in one's throat; to be unable to speak clearly until you give a slight cough.
I have a frog in my throat. (목이 쉰 것 같아)
2. go on a fool's errand; involved in a useless journey of task.
How did the interview go?
I went on a fool's errand because I confused the date of interview.(헛걸음 쳤어)
3. vouch for; to support or back someone or something.
I can vouch for his ability and character. 그의 능력과 인격을 보장할 수 있다.
4. come across; to meet or find somebody/something by chance
I came across some old pictures in the attic. 다락방에서 옛날 사진 몇 장을 발견했다
5. off hand; without delay, hesitation, or difficulty; promptly.
I can't think of the name of the restaurant off hand. 그 식당 이름이 금방 떠오르지 않아