Synonyms of heart-and-soul

1 Syllable
pious, deep
2 Syllables
earnest, ardent, serious, zealous, devout, prayerful, faithful, profound, godly, heartfelt, holy, fervid, fervent
3 Syllables
religious, pietistic, orthodox, intense, reverent, genuine, sincere, adoring, revering, worshiping, adherent
4 Syllables
goody-goody, passionate, venerating