Words That Rhyme With "Vastly" :

2 syllables:

Attlee, bassly, beastly, blastie, chastely, christly, costly, crassly, daftly, dashedly, fatly, flatly, ghastly, ghostly, gristly, Halsey, hostly, istle, justly, lastly, moistly, mostly, nasty, patsy, Priestley, priestly, rattly, trancedly

3 syllables:

augustly, compressedly, contrasty, detachedly, distressedly, downcastly, professedly, robustly, steadfastly, unjustly