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to make characteristic; to characterize
あの建物を特徴付けているのは大きな赤い屋根だ。
What characterizes that building is its large red roof.
透明感のある歌声が彼女を特徴付けた。
Her clear, resonant voice characterized her as an artist.
このブランドを特徴付ける洗練されたデザインが人気だ。
The refined design that characterizes this brand is popular.