-는대: They Say — The Contraction You Hear Constantly

-는대 is the sound of Korean passing news along: compressed quotation you will hear in almost every casual conversation about places, plans, and people.

Curriculum gloss: they say — the contracted quotation you hear constantly. 우리말샘 -는대 「002」 is exactly that compression of -는다고 해. Unit 2 neighbourhood talk is full of it — someone else’s review becomes your sentence.

What it does — and why textbooks look underwhelming

The full frame is honest but bulky:

친구가 이 동네가 조용하다고 해요.

Speech shortens the landing:

이 동네 조용하대.
여기 마트 크대.
내일부터 공사한대요.
월세가 좀 비싸대.
주인이 친절하대요.

Nothing mystical happened. -다고 해 collapsed. Learners who only practise the long form sound careful; learners who never learn the short form cannot parse real talk.

English “they say” is usable, but Korean does not always name they. The ending itself is the hearsay stamp.

Forms

Front	Casual	Polite
Verb + batchim (≠ ㄹ)	-는대	-는대요
Vowel/ㄹ · adj · 이다	-ㄴ대 / -대	-대요 / -래요
Full	-는다고 해	-는다고 해요

비가 온대.                 verb
좋대. / 괜찮대.            adjective
학생이래.                  이다 → -래 family in speech
이사한대.                  하다 compounds

Keep the adjective form clean: *좋는대 is the over-regularised mistake.

Near neighbours

Form	Job
-는다고 해요	Full quotation
-는대(요)	Same job, compressed
-는다면서	Check the hearsay with the listener
Plain assertion	No hearsay stamp

여기 편의점 많아요.         my claim
여기 편의점 많대요.         relayed claim
여기 편의점 많다면서요?     check with you

Separate trap: dictionary 「001」 -는대 as a surprised or displeased question ending. Same letters, different speech act. If the line is clearly “Wait — he does what?” you may be in 「001」, not the quote contraction. Intermediate drills start with 「002」 because frequency in daily relay is enormous.

When to use — and when to expand

Use -는대 for casual second-hand info: apartment reviews, who is moving, what the landlord said, what the group chat claims.

Expand to the full form when:

• writing anything careful;
• the listener might miss the contraction;
• you need to name the source explicitly (친구가 …다고 했어요).

Do not use it when you want the listener to confirm — that is -는다면서. Do not use it when you are stating your own observation with no hearsay packaging.

Practice rule: if you could add “according to someone” without changing the intent, -는대 is licensed. If you could not, drop the hearsay ending.