cumberworld noun1 •(offensive, no longer used) Someone who, or something which, is an encumbrance on the world; a useless person or thing.A cumber-world, yet in the world am left, / A fruitles plot, with brambles ouergrowne, / Misliued man of my vvorlds ioy bereft, / Hart-breaking cares the ofspring of my mone. — 1593 formscumberworlds