Mammoth Uncensored Word List:
56 words ending with ll, 4 letters long

ball bell bill boll bull call cell cill cull dell dill doll dull fall fell fill full gall gell gill gull hall hell hill hull jell joll kill lall lill loll lull mall mill mull nill null pall pill poll pull rill roll sell sill tall tell till toll vell wall well will wull yell yill