Synonyms of genuinely

2 Syllables
staunchly, deeply, really, fairly, indub, indeed, truly
3 Syllables
verily, mournfully, movingly, truthfully, honestly, factually, heartily, certainly, artlessly, easily, actually
4 Syllables
confirmedly, assuredly, veritably, affectingly, admittedly, informally, naturally, sincerely
5 Syllables
absolutely, authentically, unaffectedly, unpretentiously, wholeheartedly
6 Syllables
categorically
7 Syllables
characteristically