Grantree rhymes with:
braintree, lonetree, rowntree, baytree, braintree, crabtree, doubletree, lanktree, lonetree, ogletree, palmertree, peachtree, rooftree, roundtree, rowntree
Grantree sounds like:
gerrymander, grander, grandeur, grantor, grinder, grounder, groundwater, grunder, guarantor