Let’s learn about "오늘 첨 알았다” from Korea TV

▷ 오늘 처음 알았네 (그려) ! / 참나 오늘 첨 알았다! : Oh, I've never heard that before.

• 오늘 : today

• 처음(으로) : first; beginning; start

• 첨 : a short form of "처음”

• 알다 : (1) [=정보나 지식을 갖추다] know, learn, have (good) knowledge (of), be familiar (with) (2) [=이해하다] understand, know, see, follow, appreciate, (informal) get, make out (3) [=깨닫다•인지하다] realize, recognize, find, notice, sense, (formal) perceive, be aware (of), be conscious (of)

• 알았다 : past form of 알다 <— 알다 + 았/었/ㅆ(a letter makes a verb past tense) + 다(a verb ending suffix)