1. [ noun ] the choicest or most essential or most vital part of some idea or experience
Synonyms: center essence substance heart core sum marrow meat inwardness nub pith nitty-gritty gist kernel

: "the gist of the prosecutor's argument" "the heart and soul of the Republican Party" "the nub of the story"

Related terms: content stuff hypostasis haecceity bare_bones quintessence summate
2. [ adverb ] with complete faith
Synonyms: body_and_soul

"she was with him heart and soul"

Similar spelling:   heart_monitor