throwaway /ˈθrowəˌweɪ/ adjective Learner's definition of THROWAWAY
always used before a noun
1
: made to be thrown away after use : disposable用后即扔的;一次性的 2
: made or said with very little thought不假思索的 3
: tending to throw things away instead of keeping them and using them again : very wasteful不回收利用的;浪费的