등한시해요 · 등한시했어요 · 등한시할 거예요 · 등한시하세요
to neglect, to be careless about
Example
공부만 하고 건강을 등한시하면 안 돼요.
You shouldn't neglect your health and only study.
Word parts
등 equal+한 idle+시 regard
Literally 'regard as idle and ordinary', so treat it carelessly.
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