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obsession; fixation; hangup; determination; fastidiousness; pickiness about (trait, style, etc.)
complaining; criticizing
speciality (e.g. of a restaurant)
拘りが強い人だ。
He's a very particular person.
拘りを持ち続ける。
Continue to have particularities.
その品質への拘りは並々ならぬ。
His particularity towards that quality is extraordinary.