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(idle) curiosity; fancifulness; whimsy; (having) strange tastes
物好きにも毎朝川で泳いでいる人がいる。
There are people who swim in the river every morning out of curiosity.
物好きな性格で珍しい趣味が多い。
With a curious nature, I have many unusual hobbies.
こんな山奥まで来るとは物好きな人だ。
What a curious person to come all the way to these mountains.