-기 십상이다

Easy to, Highly probable, Prone to

Explanation

This expression is used to indicate that under the current circumstances, it is easy for something to happen or that its occurrence is very probable. Here, the word 십상 has the same meaning as 십중팔구 (“eight or nine out of ten”). This expression only attaches to verbs.

Details

This expression is usually used when a negative result or situation is expected, therefore it sounds awkward when used to describe positive situations.

최선을 다하다 보면 좋은 결과가 오기 십상이다.

Examples
<span class="speaker-a">가:</span> 아이가 뚱뚱하다고 친구들한테 놀림을 받아서요. 많이 먹지도 않는데 왜 그렇게 살이 찌는지 모르겠어요.<br><br><span class="speaker-b">나:</span> 줄리앙의 식습관을 보니까 인스턴트 음식을 많이 먹는 것 같습니다. 인스턴트 음식은 열량이 높기 때문에 비만을 유발하<span class='focus'>기 십상이에요.</span><br><br><span class="speaker-a">가:</span> 그래요? 그래도 어릴 때는 마른 것보다는 살이 좀 찐 게 낫지 않을까요?<br><br><span class="speaker-b">나:</span> 어린이 비만은 고혈압이나 심장 질환 등 성인병으로 이어지<span class='focus'>기 십상이기 때문에</span> 어릴 때 비만을 치료하는 게 좋습니다.
A: Kids tease my child about being overweight. He doesn’t eat a lot, so I wonder why he’s so big. B: Judging by Julien’s eating habits, it looks like he’s eating a lot of instant foods. Instant foods can easily trigger obesity because they’re high in calories. A: Really? But isn’t it better to have a little extra weight than to be thin when he’s young? B: Childhood obesity can easily lead to adult diseases such as high blood pressure and heart disease, so it’s good to treat it while one is young.
정확한 지식이 없이 주식 시장에 투자를 하면 낭패를 보<span class='focus'>기 십상이다.</span>
Failure in the stock market is very likely if you invest without accurate knowledge.
그 지역은 배수 시설이 좋지 않아서 폭우가 쏟아지면 물에 잠기<span class='focus'>기 십상이다.</span>
Because its water drainage facilities are poor, it is very likely that that area will become submerged under water in the event of heavy rain.

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