2 Syllablesfainly, gainly, mainly, maneely, plainly, sanely, vainly
Now you can make multisyllabic rhymes in the new rhymit app :)
3 Syllablesanally, banally, disdainly, germanely, humanely, inanely, insanely, mundanely, profanely, ungainly, urbanely
4 Syllablesinhumanely, inurbanely