casual: 있잖아 · polite: 있잖아요 · 저기, 있잖아요…
you know, …; listen, … (bringing up a topic)
Example
있잖아요, 저 다음 달에 결혼해요.
You know what? I'm getting married next month.
Word parts
있다 'to exist' + -잖아요 'you know': literally 'there's (this thing), you know'.
Good to know
Pronounced [읻짜나요]. Grabs attention before news or a delicate topic, or reminds: 그 카페 있잖아요, 거기서 만나요.