시큰둥해요 · 시큰둥했어요 · 시큰둥한 (+noun)
indifferent, unenthusiastic, lukewarm
Example
선물을 줬는데 동생의 반응이 시큰둥했어요.
I gave my younger brother a present, but his reaction was lukewarm.
Good to know
Often describes a reaction or attitude: 반응이 시큰둥하다 'the response is lukewarm'.
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