1.
whole body, with all one's might, putting everything into
Using one's entire body and spirit, pouring all of one's energy and effort into something. Almost always used as a modifier in the pattern 渾身の + noun, describing something done with maximum effort or intensity.
Usage
Almost exclusively used in the pattern 渾身の + noun. Rarely appears on its own. Conveys an intense, dramatic quality — the idea that someone has held nothing back.
Common in sports commentary, literary descriptions, and dramatic narratives.