다고/라고: How Korean Reports What Someone Said

다고 turns a Korean sentence into reported speech — "[someone] said that…" Attach it to a verb or adjective's plain form (맛있다고 했어요, "said it's tasty"; 온다고 했어요, "said they're coming"), or use (이)라고 for nouns (배우라고 했어요, "said he's an actor"). In casual speech, 다고 해 shrinks to 대 and 이라고 해 shrinks to 래 — which is why dramas are full of 온대! ("they say he's coming!") instead of the full form.

Every K-drama has a scene where two characters are hunched over a phone whisper-arguing about something a third person allegedly said. That entire genre of scene runs on one suffix: 다고. Textbooks call it "the quotative particle" and give you one example sentence. That's not enough — 다고 changes shape depending on what you're quoting, and then it changes shape again once people start talking fast.

Here's the version that actually sticks: learn the full form first, then learn why nobody uses it.

The gossip grammar: statement + 다고, noun + (이)라고

To report a statement — "X said that…" — you don't just tack 다고 onto whatever verb form you already know. You attach it to the plain declarative form, and that form is different for action verbs, adjectives, and nouns. Adjectives are the easy case: their dictionary form already ends in 다 (맛있다, 바쁘다), so 다고 just rides on top. Action verbs need an extra step — 오다 becomes 온다 before 고 ever shows up. And nouns skip 다고 entirely in favor of (이)라고, a special quoting form for the copula 이다.

Past tense just slides in before 다고: 갔다고 (said [they] went), 먹었다고 (said [they] ate). Future or intention leans on 거라고: 갈 거라고 했어요 (said [they] would go). The suffix itself never changes — only what sits in front of it does.

The contraction cascade: 다고 해 → 대

Here's the part that actually matters for understanding real Korean: almost nobody says the full "다고 해요" out loud. In casual and semi-casual speech, 다고 해(요) collapses into a single syllable, 대(요), and (이)라고 해(요) collapses into 래(요). This isn't slang or laziness — it's the standard casual register, and it shows up in every group chat, every drama script, every fan account translating a member's live broadcast. If you only know the long form, half of spoken Korean will sound like a different grammar point entirely.

The pattern behind all seven rows is identical: drop 하 from 해(요), keep whatever's left, and let it merge into the ending syllable. Once you see that once, you can generate every contracted form yourself instead of memorizing them one at a time — which is more than most grammar workbooks bother to show you. It's the same instinct behind knowing when to reach for the 요 ending versus dropping it.

뭐래? The eavesdropping toolkit

Ask "what did they say?" in full form and you get 뭐라고 했어요? Say it fast enough, enough times, in enough group chats, and it wears down to two syllables: 뭐래(요)? This is arguably the single most useful contracted form in the entire language, because it's the one you need every time someone drops a piece of news mid-conversation and you missed the first half.

Where learners trip: verb vs. adjective, and register

The mistake I see constantly — more than any mixed-up particle — is students treating 다고 as one fixed suffix that bolts onto any dictionary form. It doesn't. 예쁘다고 (adjective) is correct because 예쁘다 already ends in 다. But 먹다고 is wrong; the plain form of 먹다 is 먹는다, so the quoted version has to be 먹는다고. Skip that step and you've built a sentence no Korean speaker actually says, even though every individual piece looks right.