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-길래

-길래: So I Did — Spoken Reason You Acted On

Spoken connective: reason/grounds (colloquial for -기에), often leading into the speaker’s next action.

Before this, make sure you know: -(으)니까 , -아서 / -어서 , -아요 / -어요

How to form it

When Form Example
Verb / adjective / 이다 -길래 늦길래 / 좋길래 / 학생이길래
After -었- -었길래 봤길래 / 들었길래

-길래 marks a spoken reason you noticed and then acted on — so I did, since….

우리말샘 and classroom glosses treat it as a reason connective with a discovery → reaction feel. It is not a twin of every -으니까 or -아서/어서.

Why this is hard

English because / so covers cool logic and hot reaction alike. -길래 leans toward “I saw / heard / felt X, so I did Y” — often the speaker’s own next move. Learners paste it into essay cause chains where -기 때문에 or -아서/어서 fit better, and the page starts sounding chatty in the wrong genre.

It also sits near -기에 / reason frames. The classroom hook for -길래 is spoken noticing, not formal write-ups.

What it does

You report the cue that triggered your action.

비가 오길래 택시를 탔어요.
문이 열려 있길래 들어갔어요.
피곤해 보이길래 쉬라고 했어요.
값이 싸길래 두 개 샀어요.

The first clause is the noticed fact; the second is what you did with that information.

Forms

Stem + -길래 (classroom focus). Past and descriptive stems appear freely in speech: 왔길래, 비싸길래.

When not to use it

Do not use it as your default essay because. Formal cause wants other tools.

Do not treat it as identical to -으니까 when you are giving advice or commands — -으니까 has different command privileges; -길래 is mainly your own reaction story.

Do not invent a “길래 = therefore” abstract logic without a noticing flavour. If nothing was observed or felt, another reason ending is clearer.

Neighbours — and why they differ

FormWhy it is not this slot
-으니까Broad spoken reason; can lead into commands.
-아서/어서Everyday so / because; not specifically “I noticed then acted.”
-기에Reason / basis; often cooler or more written than chatty -길래.

Ask: did I notice something and then act? If yes, -길래. If you only need plain because, pick -아서/어서 or -으니까.

Do not confuse it with

Taught alongside this

On the jabi learning path, this appears in 연결어미 (conjunctive ending) — Advanced Korean 1, Unit 2, on the theme of conjunctive ending. These come with it:

Words used above

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-길래-gillaesince / so (spoken reason)
-기에-giewritten/careful counterpart
택시taeksitaxi

Quick check

No sign-up, no score saved — just see if it stuck.

1. You noticed the rain and that is why you took a taxi. Spoken noticing, not essay because.

2. You noticed it was late, so you took a taxi. Which line is the spoken noticing reason?

3. You noticed it was good, so you bought two. The reason is the chatty noticing one.

Common questions

Dictionary?

우리말샘 -길래 「002」: colloquial way of saying -기에.

When prefer -니까?

Neutral spoken reason often uses -니까. -길래 leans casual and ‘I noticed → I did’.

Writing?

Essays prefer -기에 / -아서 / -으니까 over -길래.

After 이다?

학생이길래 works — same family as -기에.