festoon - cover
The word ‘festoon’ was originally used to refer to a chain of flowers hung as a decoration. It has since been adapted to more commonly express an excessive kind of adornment or covering, whether used for decorative purposes or not.
The council decided to festoon the town with flags and banners to welcome the team home after their victory in the cup final.
It was obvious that nobody had been in the attic of the house for a very long time. It was festooned with cobwebs.
The office was festooned with Christmas lights for the party. They made everything look very festive.