burden · noun C /ˈbɜrd.ən/
burden
C1 something difficult or unpleasant that you have to deal with or worry about
Dictionary examples:
the burden of responsibility
I'd hate to be a burden to you when I'm older.
Learner example:
You can imagine the reaction of people: we're exhausted, we cannot stand the burden of new taxes; the government should reduce them, instead of increasing fiscal pressure. (Certificate in Advanced English; C1; Italian)