heart and soul
English
Noun
heart and soul
- the core of a thing; the most essential or important part
- The heart and soul of any democracy is its electorate.
- passion; true commitment
- She put her heart and soul into the project.
Synonyms
- (core): crux; gist; See also Thesaurus:gist
Adverb
heart and soul (not comparable)
- With the utmost earnestness.