-잖아요 (Reminding of Shared Knowledge)

'-janayo' reminds the listener of a fact they already know, much like adding 'you know how…' or 'right?' for confirmation.

우산 챙기세요. 오늘 비 온다고 했잖아요.

usan chaenggiseyo. oneul bi ondago haetjanayo.

Grab an umbrella. They said it would rain today, remember?

그 영화 재미있잖아요. 우리 같이 봤잖아요.

geu yeonghwa jaemiitjanayo. uri gachi bwatjanayo.

That movie's fun, you know. We watched it together, remember?

When someone has forgotten or gotten something wrong, '-janayo' lets you set them straight gently.

거기 지금 문 닫았어요. 일요일은 쉬잖아요.

geogi jigeum mun dadasseoyo. iryoireun swijanayo.

It's closed right now. They're off on Sundays, remember?

'-janayo' can come across as a jab ('how do you not know that?'), so watch your tone.

걱정 마세요. 당신은 늘 잘하잖아요.

geokjeong maseyo. dangsineun neul jalhajanayo.

Don't worry. You always pull it off, you know.

When backing up your own argument, citing a fact no one could deny with '-janayo' gives it persuasive weight.

무리하지 마세요. 어제도 늦게까지 일했잖아요.

murihaji maseyo. eojedo neutgekkaji ilhaetjanayo.

Don't push yourself. You were working late yesterday too, remember.

당연히 합격하죠. 그렇게 열심히 준비했잖아요.

dangyeonhi hapgyeokajyo. geureoke yeolsimhi junbihaetjanayo.

Of course you'll pass. You prepared so hard, after all.

Used as if reminding yourself rather than the listener, the tone softens considerably.

괜찮아요. 실수는 누구나 하잖아요.

gwaenchanayo. silsuneun nuguna hajanayo.

It's okay. Everybody makes mistakes, after all.

Function	Example	Nuance
Recalling a fact	비 온다고 했잖아요	Bringing a known fact back to mind
Correcting	일요일은 쉬잖아요	Setting a misunderstanding straight
Encouraging	잘하잖아요	A positive reminder
Pushing back	내가 말했잖아요	A mild protest
Persuading	준비했잖아요	Pressing with shared grounds
Comforting	누구나 하잖아요	Reassuring with a universal truth

💡 Tip: '-geodeunyo' delivers new information; '-janayo' recalls information already shared. That contrast is the whole point.