Hopefully rhymes with:
helpfully, anencephaly, artfully, blissfully, carefully, cheerfully, delightfully, dreadfully, dutifully, faithfully, fitfully, forcefully, frightfully, gainfully, gleefully, gracefully, gratefully, harmfully, helpfully, joyfully, lawfully, manfully, masterfully, meaningfully, mercifully, mindfully, painfully, peacefully, pitifully, playfully, purposefully, regretfully, respectfully, rightfully, ruefully, skillfully, sniffily, successfully, tactfully, tastefully, tearfully, thankfully, thoughtfully, truthfully, unlawfully, unsuccessfully, usefully, wilfully, willfully, wishfully, wistfully, woefully, wonderfully, wrongfully
Hopefully sounds like:
haapala, habel, hable, haefele, hafele, hafley, happel, happily, havel, havill, heavily, hebel, heffel, heffley, hefley, heibel, heiple, heupel, hipple, hipwell, hively, hobble, hoefle, hoopla, hopeful, hopewell, hoppel, hopple, hovel, hubbell, hubble, hubley, huebel, huval, hybl