unnecessary的意思是：adj.不必要的；多余的。unnecessary【近义词】needless不需要的。unnecessary的读音是英[ʌn'nesəsəri]；美[ʌn'nesəseri]。
一、英英释义点此查看unnecessary的详细内容
二、网络解释
1. 不必要的,多余的：Sleep and food are necessary to health. 睡眠和食物对健康是必要的. |unnecessary 不必要的,多余的 | Sports areunnecessary. 运动是不必要的.
2. 没必要的：unnecessarily 不必要地 |unnecessary 没必要的 | unneighborly 不睦邻的
三、例句
Don't involve yourself in unnecessary expense.
勿做不必要的花费。
She often pothers herself over unnecessary details.
她常在不必要的琐事上自扰。
All this is totally unnecessary.
所有这些完全都是多余的。
Cut off the unnecessary twigs and branches.
把多余的枝叶剪去。
四、词汇搭配
五、经典引文
Ringing the dinner-bellsa most unnecessary ceremony for assembling three persons.
出自：Sir W. ScottThis aerodynamic..2-seater will eschew all unnecessary frills.
出自：Motor TrendNew navigational aids made it unnecessary for many ships..to use pilots.
出自：GuardianMother Superior..believed dusty papers were an unnecessary waste of space.
出自：A. S. Byattunnecessary的相关近义词
needless、superfluous、uncalled-for、excess、unessential、extraneous、peripheral、pointless、redundant、gratuitous、unwarranted、excessive、avoidable、preventable、unneeded
unnecessary的相关反义词
unnecessary的相关临近词
unnerve、unnatural、unnecessary man、unnecessary words、unnecessary delay、Unnecessary rooms、unnecessary luxury、unnecessary relief、unnecessary travel、unnecessary injury、unnecessary anxiety