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be a defeatist
defeatist 为可数名词，指习惯性认输的人。
Don't be a defeatist; we still have a chance.
别当失败主义者，我们还有机会。
失败主义者；认输者
先理解核心含义，再看它在真实句子里的用法。
失败主义者；认输者
someone who is resigned to defeat without offering positive suggestions
Don't be a defeatist; we still have a chance.
别当失败主义者，我们还有机会。
主张失败主义的人；持失败态度者。
Someone who advocates defeatism, or has such an attitude.
After he refused to try the new plan, we called him a defeatist.
他拒绝尝试新计划后，我们称他为失败主义者。
A defeatist often gives up before the real problems even appear.
失败主义者往往在真正的问题出现之前就放弃了。
The coach will not tolerate defeatists who refuse to believe the team can recover.
教练不会容忍那些拒绝相信球队能恢复的失败主义者。
defeatist 为可数名词，指习惯性认输的人。
Don't be a defeatist; we still have a chance.
别当失败主义者，我们还有机会。
He is a defeatist about the project's future.
他对项目的未来持失败主义态度。
Stop acting like a defeatist and propose a solution.
别表现得像个失败主义者，提出一个解决方案吧。
Defeatists never try new approaches.
失败主义者从不尝试新方法。
Not this
He defeatist.
Use this
He is a defeatist.
英语中名词作表语时前面必须有 be 动词和冠词。中文'他失败主义者'直译为 He defeatist 缺少 is 和 a；改为 He is a defeatist 才符合英语的系动结构和单数可数名词规则。
Not this
She is a defeatist person.
Use this
She is a defeatist.
defeatist 在此是名词，意为'失败主义者'，本身已指人；把它当形容词放在 person 前既混淆词性又造成语义重复。直接用 a defeatist 即可。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
失败主义态度；认输的态度
His defeatist attitude annoyed everyone in the meeting.
他在会议上那种失败主义态度让所有人反感。
失败主义言论；泄气话
Stop the defeatist talk and try again.
别说泄气话了，再试一次。
失败主义做法；认输的处理方式
A defeatist approach to studying will not improve your grades.
对学习采取认输的态度不会提高成绩。
失败主义人生观；悲观认输的看法
Her defeatist outlook kept her from applying for the job.
她的失败主义人生观使她不敢申请那份工作。
Use defeatist naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆成 defeat（失败）+ -ist（…的人）：一遇失败就认输、不再努力的人。
语域：neutral 常见场景：日常对话、职场或团队讨论、媒体评论 该词为普通中性词，口语和书面语中都可使用；通常用来形容面对困难或竞争时提前认输、不再积极想办法的人，语气常带轻微不赞同。多用于讨论个人态度或团队心态的场合。
defeatist 的重音在第二音节，核心音为 /iːt/，词尾为 /ɪst/。没有常见单词与 defeatist 完全押韵。下面单词分为两类：-eat 类单词（feat, beat, heat）与 defeatist 拼写有 'eat'，且都有长元音 /iːt/，但缺少词尾 /ɪst/，所以不押韵；-ist 类单词（artist, dentist, tourist）共享词尾 /ɪst/，但重音位置和前面的元音不同，也不押韵。注意这些词只是相近的拼写/发音参照。
Dictionary facts from ECDICT, WIKTIONARY.