/ ˈθrəʊəweɪ; NAmE ˈθroʊ-/ adjective [ only before noun ]
1.
throwaway line / remark / comment something you say quickly without careful thought, sometimes in order to be funny :
She was very upset at what to him was just a throwaway remark.
2.
( of goods, etc. ) produced cheaply and intended to be thrown away after use
SYN disposable :
throwaway products
We live in a throwaway society (= a society in which things are not made to last a long time) .