heart and soul

English

Noun

heart and soul (uncountable)

1. the core of a thing; the most essential or important part

   The heart and soul of any democracy is its electorate.

2. 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)

1. With the utmost earnestness.