Inference & Hearsay: -na boda / -daneunde / -(eu)nga boda

These forms express inference based on what you see or hear, or relay hearsay while adding your own comment.

-na boda / -(eu)nga boda (it seems that ~)

Use '-na boda' with verbs and '-(eu)nga boda' with adjectives to guess, based on evidence, that something is the case.

불이 꺼져 있네요. 모두 자나 봐요.

Bul-i kkeojyeo inneyo. Modu jana bwayo.

The lights are off. Everyone seems to be asleep.

길이 막히는 걸 보니 사고가 났나 봐요.

Gil-i makhineun geol boni sago-ga nanna bwayo.

Judging by the traffic jam, there seems to have been an accident.

얼굴이 빨간 걸 보니 추운가 봐요.

Eolgul-i ppalgan geol boni chuunga bwayo.

Judging by your red face, it seems you're cold.

-daneunde / -dadeonde (I heard ~, so... / they say ~ but...)

'-daneunde' relays heard information and leads into your own opinion, suggestion, or question.

내일 비가 온다는데 우산 챙기세요.

Naeil bi-ga ondaneunde usan chaenggiseyo.

They say it'll rain tomorrow, so bring an umbrella.

그 식당이 맛있다던데 한번 가 볼까요?

Geu sikdang-i masittdadeonde hanbeon ga bolkkayo?

I heard that restaurant is good—shall we give it a try?

요즘 그 배우가 인기가 많다더라고요.

Yojeum geu baeu-ga inki-ga mantadeoragoyo.

I heard that actor is really popular these days.

-na boda vs. -neun geot gatda (nuance contrast)

'-na boda' infers from observed evidence, while '-neun geot gatda' also covers broader, more subjective impressions. The presence or absence of evidence is the key difference.

표정을 보니 결과가 안 좋았나 봐요.

Pyojeong-eul boni gyeolgwa-ga an joannna bwayo.

From your expression, it seems the result wasn't good.

Form	Meaning	Example
-나 보다	verb guess	비가 오나 봐요
-(으)ㄴ가 보다	adjective guess	추운가 봐요
-다는데	hearsay + follow-up	온다는데 챙기세요
-다던데	past hearsay	맛있다던데 가 볼까요
-는 것 같다	subjective guess	비가 오는 것 같아요

💡 Tip: Use '-na boda' for inference from observed evidence, and '-get-' for immediate, stronger guesses.

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