모자라다

Meanings

lack; be short; be insufficientTo not reach a fixed number, quantity, or level.
be dull; be slow-witted; be stupidFor a level of competency, power, knowledge, etc., to not reach a standard.

Examples from Lessons (3)

맞아 요, 저 도 기출문제를 풀어 보 니까 시간 이 항상 모자라더라고요.
That's right, when I tried solving past exam questions, I always ran out of time, too.
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그렇지만 모든 문장 을 제대로 다 읽으려고 하면 시간 이 모자라요.
Even so, if you try to read every single sentence properly, you will run out of time.
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모든 걸 다 주고 도 모자랄 만큼 사랑했는데 결국 남는 건 공허함뿐이네.
I loved you enough that giving you everything wasn't enough, and in the end all that's left is emptiness.
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Grammar in These Examples

-아/어Level 1Informal ending -ㄴ/는/ㄹ 만큼Level 5Enough to, as much as -요FoundationsPoliteness marker -(으)ㄹ 것Level 3Future tense noun modifier