[ T ] to spread across an area or place untidily:
The park was littered with bottles and cans after the concert.
Dirty clothes littered the floor of her bedroom.
be littered with sth A place, document, or other object that is littered with something has or contains a lot of that thing:
The newspaper has a reputation for being littered with spelling mistakes.
[ I ] to drop rubbish on the ground in a public place:
People who litter often have no pride in the area.