Synonyms of wholeheartedly

2 Syllables
deeply, really, frankly, truly
3 Syllables
earnestly, candidly, truthfully, totally, profoundly, healthily, devoutly, vibrantly
4 Syllables
genuinely, ungrudgingly, aboveboard, vigorously, naturally, ingenuously, sincerely, bigheartedly
5 Syllables
altruistically
6 Syllables
unmitigatedly