渾身 こんしん
konshin

Noun
no-Adjective

1. (using) one's whole body; (putting in) all one's efforts; (exerting) all one's energies

わたくし渾身 こんしん ちからをこめてその けようとした。
watashiwa konshinno chikarao komete sono tō akeyōto shita
I tried to open the door with all my force.
Other forms: