There are quite a few synonyms for the word "bur-". Some include "burden", which means something that is very heavy or difficult to carry; "burr", which refers to a rough and prickly covering on a plant or animal; "burlesque", which is a type of theatrical entertainment that features humor, satire, and mock exaggeration; and "burglar", which is someone who commits theft or other crimes. Other synonyms include "burnish", which means to polish or shine something; "bureau", which is a type of piece of furniture with drawers or shelves for storage; and "burgher", which is a person who lives in a town or city.