2 Syllablescleanly, greenly, keenly, leanly, meanly, sheenly
Now you can make multisyllabic rhymes in the new rhymit app :)
3 Syllablesmachinely, obscenely, penally, queenly, routinely, serenely, terrenely, uncleanly, venally
4 Syllablesadrenally, serpentinely
5 Syllablesunforeseenly