Complete devotion of body and soul; to commit oneself wholeheartedly and with all one's energy.
彼はプロジェクトに全身全霊を捧げた。
He devoted his whole body and soul to the project.
試合では全身全霊でプレーしたが、結果は惜しくも負けた。
He played the match with all his heart and soul, but unfortunately lost.
私はこの仕事に全身全霊で取り組むつもりだ。
I intend to tackle this work with all my body and soul.
全身全霊を尽くして準備した公演は多くの人の心を動かした。
The performance, prepared with wholehearted devotion, moved many people.