Declining Politely in Korean: -기 때문에, -는데, -을 수밖에 없다
To decline politely in Korean, use -기 때문에 (because), -는데 to soften (가고 싶은데… — I'd love to, but), and -을 수밖에 없다 (I have no choice but to).
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Written by Alvin Lim Certified Korean Language Teacher (Level 2)
To turn someone down kindly in Korean, lean on -기 때문에 (because), soften with -는데 (가고 싶은데… — I’d love to, but), and reach for -을 수밖에 없다 when it’s truly unavoidable: 거절할 수밖에 없어요 (I have no choice but to decline). Saying “no” gracefully is a real skill — and Korean gives you the exact tools to refuse a 약속 (plan) without hurting feelings.
In the last lesson you learned to handle a phone call. Now imagine that call is an invitation you can’t accept — let’s learn to decline it warmly, with a reason.
Ten words for declining gracefully
These are the words that show up when you have to say “sorry, I can’t.”
-기 때문에: stating your reason
When you need to give a clear, firm reason, attach -기 때문에 to the verb or adjective stem. It means “because” and puts the spotlight squarely on the cause.
시간이 없기 때문에 못 가요 = because I have no time, I can’t go 일이 많기 때문에 바빠요 = I’m busy because there’s a lot of work 비가 오기 때문에 약속을 취소했어요 = I cancelled the plan because it’s raining 몸이 아프기 때문에 쉬어야 해요 = I have to rest because I’m sick
-기 때문에 is stronger and more explicit than the softer -아서/어서 (“since”). One rule to remember: you can’t use -기 때문에 before a command or suggestion — for that, use -으니까. But for explaining why you must decline, it’s clear and respectful.
How do you soften a “no”?
To cushion a refusal, start with -는데. It sets up a gentle “but/however” — you acknowledge the wish first, then deliver the obstacle.
가고 싶은데 일이 있어요 = I’d love to go, but I have work 좋은데 오늘은 좀 어려워요 = it sounds nice, but today’s a bit hard 맛있는데 배가 불러요 = it’s tasty, but I’m full 만나고 싶은데 다른 약속이 있어요 = I want to meet, but I have another plan
By leading with 가고 싶은데 (I want to go, but…), you sound warm instead of cold. And when the situation truly leaves you no option, use -을 수밖에 없다 — “there’s nothing for it but to”: 거절할 수밖에 없어요 = I have no choice but to decline. Watch the 르-irregular verbs that pop up here too: 모르다 → 몰라요 (I don’t know), 다르다 → 달라요 (it’s different), 빠르다 → 빨라요 (it’s fast) — the 르 drops and a doubled ㄹㄹ appears.
What does a gentle refusal sound like?
Here’s an invitation softly declined, reason and all:
All three tools work together: 가고 싶은데 softens the lead-in, 일이 있기 때문에 gives the firm reason, and 거절할 수밖에 없네요 frames it as unavoidable. Cap it with 미안해요 and 다음에 꼭 갈게요, and you’ve said “no” without burning a bridge.
FAQ
What’s the difference between -기 때문에 and -아서/어서 for “because”? Both give a reason, but -기 때문에 is stronger and more explicit — it spotlights the cause: 시간이 없기 때문에 못 가요 = it’s BECAUSE I have no time that I can’t go. -아서/어서 is softer and more everyday: 시간이 없어서 못 가요 = I can’t go since I have no time. One key rule: -기 때문에 cannot be used for commands or suggestions, but -아서/어서 and -으니까 can. For a firm, clear reason when declining, -기 때문에 fits well.
How does -는데 soften a refusal? -는데 sets up background or a gentle contrast — it’s the verbal equivalent of “I’d love to, but…”. 가고 싶은데 일이 있어요 = I want to go, BUT I have work. By acknowledging the invitation first (가고 싶은데), you cushion the “no” that follows. It makes you sound warm rather than blunt. Note: verbs take -는데 (가는데), but adjectives and 싶다 take -은데 (좋은데, 가고 싶은데).
When do I use -을 수밖에 없다? -을 수밖에 없다 means “there’s no choice but to ___.” It frames an outcome as unavoidable: 거절할 수밖에 없어요 = I have no choice but to decline; 기다릴 수밖에 없어요 = we can only wait. The 밖에 means “outside of / except,” so literally “there’s nothing outside of doing it.” It always ends with 없다. Use it when you want to show the decision was forced by circumstances, not by your own wish.
Next: formal speech — the 합니다 style. Previous: making phone calls — 여보세요 and -게. Full path: curriculum hub.