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、词典解释
1.不需要的；没必要的；多余的
If you describe something asunnecessary, you mean that it is not needed or does not have to be done, and is undesirable.
e.g. The slaughter of whales isunnecessary and inhuman...
屠杀鲸鱼是没有必要的也是不人道的。
e.g. He accused Diana of making anunnecessary fuss.
他责备黛安娜没必要那么大惊小怪。
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