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negative; passive; half-hearted; unmotivated
彼女は消極的な性格で自分から話さない。
She has a passive personality and doesn't speak up on her own.
消極的な態度では成功は難しいと思う。
I think success is difficult with a passive attitude.
最初は消極的だったが徐々に積極的になった。
At first I was passive, but gradually became more active.