拘(こだわ)るto fuss over, to be particular about, to be obsessive, to be fixated

上司(じょうし)：「些細(ささい)なミスにこだわる必要(ひつよう)はありません。」

Boss: "There's no need to be fixated on trivial mistakes." {to fuss over, to be particular about, to be obsessive, to be fixated}

部下(ぶか)：「形式(けいしき)にこだわる意味(いみ)はあるのでしょうか…？」

Subordinate: "Is there any sense in being so fixated on formalities...?" {to fuss over, to be particular about, to be obsessive, to be fixated}

シェフが材料(ざいりょう)と調理(ちょうり)方法(ほうほう)に拘(こだわ)ったこの料理(りょうり)はとても美味(おい)しいです。

This dish, which the chef has been obsessive about in terms of ingredients and cooking methods, is very delicious. {to fuss over, to be particular about, to be obsessive, to be fixated}

そんなつまらない事(こと)に拘(こだわ)ったところで、得(え)るものは何(なに)もありません。

There is nothing to gain by being fixated on such trivial matters. {to fuss over, to be particular about, to be obsessive, to be fixated}

彼(かれ)は基本(きほん)的(てき)に物事(ものごと)に拘(こだわ)りのない人(ひと)ですが、趣味(しゅみ)のプラモデルに関(かん)してはとことん拘(こだわ)ります。

He is basically not a person who fusses over things, but when it comes to his hobby of plastic models, he is extremely particular. {to fuss over, to be particular about, to be obsessive, to be fixated}