Graybill rhymes with:
brakebill, brightbill, cogbill, cranesbill, crossbill, cybill, handbill, hawkbill, hornbill, lookabill, lookingbill, newbill
Graybill sounds like:
garafalo, garafola, garble, garofalo, garofolo, grabel, grabill, grable, grapple, gravel, gravell, gravelle, gravelly, gravely, gravley, graybeal, greubel, gribble, griebel, grovel, gruffly