noun / verb
burden
BUR-dun/ˈbɜːrdn/
A heavy load that must be carried.
The man bends beneath the heavy burden across his back.

Etymology
Old English byrðen covered both a physical load and a duty. The modern worry sense treats a troubling responsibility as something a person must carry.
In context
Women bear the biggest part of the burden of caring for older Americans and their growing need for medical care and other support.
More examples
- Medical bills placed a severe burden on the family.
- She did not want to burden him with another worry.
- The study measured the disease burden across the region.
Forms
burden · burdens · burdened · burdening
Similar words
- load
- A general amount carried, while burden emphasizes weight or difficulty.