momentous

Word family  noun moment momentum adjective momentary momentous adverb momentarily

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++mo·men·tous /məʊˈmentəs, mə- $ moʊ-, mə-/ adjective  IMPORTANTa momentous event, change, or decision is very important because it will have a great influence on the future 〔事件、变化或决定等〕重大的，重要的 a momentous decision 重大决定 Momentous events are taking place in the US. 美国正在发生重大事件。 His colleagues all recognized that this was a momentous occasion. 他的同事都认识到这是一个重要时刻。 one of the most momentous days in British sport 英国体育事业最重要的日子之一► see thesaurus at important

Examples from the Corpus

momentous• At the time, our department was going through some momentous changes.• In the physical sciences alone, there were momentous changes.• At this point William made a momentous decision -- he resigned from his job and joined the army.• The revolution taking place in eastern Europe must be counted as one of the most momentous events of this century.• At first the momentous events unfolding in Rome seemed barely relevant.• Such a thing would have momentous implications.• Henceforth she must carry on from where she had started that momentous morning in Goddy's office.• Able leaders inspire groups engaged in less momentous projects as well.• a momentous shift in policy• Something momentous was bound to happen soon.• Indeed, 1989 was a momentous year.momentous decision• So he made what turned out to be a momentous decision.• Within a decade, she was making momentous decisions about the Pentagon Papers and Watergate.• This was to be a momentous decision although he did not know it at the time.• We stand on the brink of two momentous decisions at Maastricht.• Yet Major did not choose to discuss the momentous decision he was about to take with his wife.• It was as if she had made her decision, her momentous decision to marry, sleepwalking.• At the age of two, a male makes a momentous decision-whether to become adult or to stay young.

mo·men·tous adjectiveChineseSyllable  

or momentous change, decision Corpus is a event,

momentous
mo‧men‧tous /məʊˈmentəs, mə- $ moʊ-, mə-/ adjectivea momentous event, change, or decision is very important because it will have a great influence on the future:
    a momentous decision
    Momentous events are taking place in the US.
    His colleagues all recognized that this was a momentous occasion.
    one of the most momentous days in British sport
     

THESAURUS

■ very important
   ▪ essential very important, especially for the success, health, or safety of someone or something: It is essential to speak the local language. | essential supplies of food and clothing
   ▪ vital/crucial extremely important, because without it there could be serious problems: His evidence was vital to the case. | The US plays a crucial role in the region. | The media are a vital part of the political system.
   ▪ key extremely important and having a big effect: Wheeler had a key role in the development of the atom bomb. | Timing is key.
   ▪ of great/considerable importance very important: In the construction industry, health and safety are of considerable importance.
   ▪ momentous very important because it has a very great effect on the future: Momentous events were taking place in Russia. | a momentous decision

mo·men·tousBrE /məˈmentəs/ 🔊NAmE /moʊˈmentəs/ 🔊 adjectivevery important or serious, especially because there may be important results 关键的；重要的；重大的 SYN historic ◆a momentous decision/event/occasion 重大决定／事件；重要时刻