quán​shēn​xīn

wholeheartedly

全身心 quán​shēn​xīn
wholeheartedly adverb
with one's entire being; heart and soul

He devoted himself heart and soul to his artistic creation, even forgetting everything around him.

Frequency

Movie subtitles
4.92 per million appears in 2% of films

Sources

Definitions
CC-CEDICT
Frequency data
SUBTLEX-CH