filler
Definitions
A substance used to fill a hole, crack, or cavity in a material.
A word, phrase, or sound used to occupy time while a speaker is thinking.
Something added to a product to increase its bulk or weight.
Examples
The speaker used too many filler words like 'um' and 'uh' during his presentation.
I added some extra filler to the cushion to make it more comfortable.
The article was mostly filler and lacked any real substance or new information.
Synonyms
padding stuffing supplement add-on extra make-weight surplus