throw‧a‧way [only before noun]
something that someone says or writes quickly, without thinking carefully about it:
It was only a throwaway comment.
He claims people overreacted to a few throwaway lines in the article.
throwaway products have been produced cheaply so that you can throw them away after you have used them [= disposable]:
a throwaway cigarette lighter
used to show disapproval when talking about modern societies in which products are not made to last a long time