Grammar · 10 min read

How to Say "For" in Korean: -(으)려고, -(으)러, -기 위해, -도록, and -게

English squeezes a huge range of meanings into one tiny word. "For." I'm studying for the test. I went to the store for milk. I exercise for my health. To make this easier for you. Korean splits that range across at least five different patterns, and the textbook gloss "in order to" makes them all feel interchangeable when they are not.

The Quick Decision Tree

Before any details, a 30-second triage. Run your sentence through these four questions before you commit to a pattern.

If you only remember the tree, you will already pick the right pattern most of the time. Now let's open each one.

Side by Side: -(으)려고 vs -기 위해 vs -도록

These three patterns are the heart of the confusion. They all map to "in order to" or "so that" in English glosses, and that is why they feel like rivals. They are not. They divide the work cleanly.

The single most useful column is "Subject." If the person doing the second action is different from the person doing the first action, -(으)려고 falls out and -도록 takes over. -기 위해 sits in the middle, comfortable in writing, possible in either subject configuration but most natural when subjects match.

Pattern 1: -(으)려고 (intention, planning to)

This is the workhorse for "I plan to V" or "I'm going to V (so that)." It is technically called a 연결어미 (connective ending, the kind of suffix that joins two clauses), and the National Institute of Korean Language puts it at Level 1 with the meaning 의도 (intention).

Two rules to remember. First, the subject of both clauses must match: the person who intends and the person who acts are the same. Second, the past-tense pre-final ending -았/었- (선어말 어미, the suffix that normally sits between a verb stem and its sentence ending) cannot attach before -(으)려고. So 갔으려고 or 먹었으려고 are not possible. The intention is forward-looking by definition. Any past tense in the sentence has to live on the main verb at the end.

When NOT to use it: Different subjects. You cannot say 아이가 잘 자려고 음악을 틀어줬어요 to mean "I played music so that the child would sleep well." That is a different-subject construction, and it needs -도록: 아이가 잘 자도록 음악을 틀어줬어요.

Pattern 2: -(으)러 (in order to V, with a verb of going)

This is the most slot-restricted pattern in the bundle, which is also what makes it the easiest to use correctly. -(으)러 only attaches to a verb that expresses purpose, and the main clause must be a verb of motion, almost always 가다, 오다, or 다니다. NIKL also lists this at Level 1.

When NOT to use it: Any time there is no going, coming, or attending. -(으)러 cannot be the purpose ending in a sentence like "I study Korean to watch dramas without subtitles." That is -(으)려고 territory: 자막 없이 드라마를 보려고 한국어를 공부해요. The verb in the main clause is 공부하다, not a verb of going, so -(으)러 is structurally blocked.

Pattern 3: -기 위해(서) and -기 위한 (for the sake of V-ing)

This is the formal, written cousin of -(으)려고. NIKL lists it at Level 3 in the 표현 (expression) category, with all four shapes treated as one family: -기 위해, -기 위해서, -기 위한, plus the noun-attached 을/를 위해 and 을/를 위한. The -기 위한 form turns the whole purpose phrase into a noun modifier ("the X for V-ing").

Why does this register as "more written"? Two reasons. The -기 nominalizer (the bit that turns a verb into a noun, "V-ing") is itself a written-leaning device, and the whole phrase tends to attach to deliberate, declared goals, which is the kind of sentence you build in essays, business writing, government notices, and news headlines.

When NOT to use it: Casual conversation about your weekend plans. If you tell a friend 맛있는 거 먹기 위해서 강남에 가요, it sounds like you are reading a press release about your own day. 맛있는 거 먹으러 강남에 가요 is what a real human would say.

Pattern 4: -도록 (so that, in such a way that)

This is the pattern that finally pulls -도록 apart from -기 위해 in your head. -도록 is also a 연결어미, listed at NIKL Level 3, and its job is fundamentally different from the patterns above. -(으)려고 and -기 위해 describe your intention. -도록 describes a result you want to bring about, often in another person, and it is comfortable when the subject changes between clauses.

Notice the second example. -도록 is the natural pattern when paired with a command or suggestion that is meant to cause the result described in the first clause. That command-pairing is also why it shows up in the related expression -도록 하다 (to make sure that), which NIKL lists alongside -게 하다 as a sibling.

When NOT to use it: Plain "I plan to" sentences with one subject and no causation involved. Saying 제주도에 가도록 비행기 표를 샀어요 sounds wrong, because there is no result-in-someone-else being engineered. The natural pattern there is 제주도에 가려고 비행기 표를 샀어요.

Pattern 5: -게 (the colloquial cousin of -도록)

-게 overlaps heavily with -도록 and runs lighter on the ear. Where -도록 often shows up in writing, careful explanation, or instructions, -게 sits more naturally in everyday speech.

NIKL lists the related expression -게 하다 at Level 3 as a near-synonym of -도록 하다. In casual conversation, -게 often replaces -도록 with no loss of meaning. The reverse swap (using -도록 in everyday chat) sounds slightly more careful or instructional, like you are giving directions on a form.

Quick Note: -느라(고) Is Not in This Bundle

I get this question often enough to flag it. -느라고 looks like it might belong with the purpose patterns, but it does not. NIKL classifies it as a 연결어미 at Level 3, and its meaning is "because of doing X, Y happened (typically negative)." It is a cause pattern, not a purpose pattern.

The Three That Get Mixed Up Most

Back to the question we opened with. -도록 vs -기 위해 vs -기 위한 get tangled together more than any other trio in this bundle. The cleanest answer in three lines:

Compare these three sentences carefully:

If those three feel distinct now, the bundle is doing its job. Three different shapes, three different jobs, no overlap.

Recognition Quiz

What You'll Notice as You Keep Listening

Once you have the decision tree in your head, real Korean starts sorting itself. You'll hear -(으)러 가다 on every food invitation, -(으)려고 in casual plans, -기 위해 in news anchors and corporate announcements, -도록 in instructions and parental advice, and -게 in everyday "do it like this" speech. The patterns stop blurring because each one wears a different uniform.

If you find yourself stuck in a real sentence, run the four-question tree from the top. Subject same or different? Verb of going involved? Casual or formal register? Result in someone else? Three out of four sentences will resolve before you reach question four.