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overconfidence in sth
后接名词或名词短语，表示在某方面的过度自信；overconfidence 通常为不可数名词，指一种整体心态。
Her overconfidence in the data made her ignore the warning signs.
她对数据的过度自信使她忽略了警示信号。
过度自信；自负
先理解核心含义，再看它在真实句子里的用法。
过度自信；自负
excessive confidence; certainty greater than circumstances warrant
Her overconfidence in the data made her ignore the warning signs.
她对数据的过度自信使她忽略了警示信号。
过度自信；无端或过分的自信。
An excessive or unwarranted degree of confidence.
His overconfidence made him ignore the warning signs before the presentation.
他的过度自信使他在演讲前忽略了警告信号。
The team's overconfidence led them to skip the final rehearsal.
团队的过度自信导致他们跳过了最后一次彩排。
She warned him that overconfidence could be dangerous in such negotiations.
她提醒他，在这种谈判中过度自信可能很危险。
后接名词或名词短语，表示在某方面的过度自信；overconfidence 通常为不可数名词，指一种整体心态。
Her overconfidence in the data made her ignore the warning signs.
她对数据的过度自信使她忽略了警示信号。
about 后接话题或结果，强调对某个具体事件的盲目乐观。
The report warned against overconfidence about the market's recovery.
报告警告说，对市场复苏的过度自信是危险的。
that 从句说明过度自信的具体内容；这类表达常用于批评或警示。
The overconfidence that the plan cannot fail is dangerous.
认为计划不可能失败的那种过度自信是危险的。
Not this
He is overconfidence about passing the exam.
Use this
He is overconfident about passing the exam.
overconfidence 是名词，不能直接用在 be 动词后作表语；这里需要用形容词 overconfident，表示“过度自信的”。
Not this
His overconfidence on his English ability led to many mistakes.
Use this
His overconfidence in his English ability led to many mistakes.
overconfidence 后接介词 in 表示“在某方面/对某事过度自信”，不接 on；这是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
过度自信偏差
The overconfidence bias can lead investors to trade too often.
过度自信偏差会导致投资者交易过于频繁。
危险的过分自信
His dangerous overconfidence made him ignore the warnings.
他危险的过分自信使他无视了警告。
滋生过度自信
A string of easy wins can breed overconfidence in a team.
一连串轻松的胜利会给团队滋生过度自信。
对自己能力的过度自信
Her overconfidence in her own abilities led to a costly mistake.
她对自己能力的过度自信导致了代价高昂的错误。
某种过度自信
He spoke with a certain overconfidence that annoyed his colleagues.
他说话时带有某种过度自信，这让同事们感到恼火。
被自负蒙蔽双眼
The team was blinded by overconfidence and ignored the warning signs.
团队被自负蒙蔽了双眼，忽视了预警信号。
自负滋生粗心
Overconfidence breeds carelessness, so always double-check your work.
自负滋生粗心，所以务必反复核对你的工作。
危险程度的自负
His dangerous level of overconfidence made him underestimate every obstacle.
他危险程度的自负使他低估了每一个障碍。
你的过度自信是你的弱点。
Darth Vader says this to Luke during their lightsaber duel in The Empire Strikes Back.
达斯·维达在《帝国反击战》中与卢克的光剑决斗时对他说了这句话。
过度自信是缓慢而阴险的杀手。
The Ancestor, the narrator of the video game Darkest Dungeon, speaks this line as a warning.
视频游戏《暗黑地牢》的旁白祖先说出了这句警告。
Use overconfidence naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 over（过）和 confidence（自信）叠在一起：信心多得从杯口溢出来，就是过度自信。
语域：neutral 常见场景：心理与行为讨论、职场与决策分析、日常评论 该词为中性正式用词，多用于书面或较严肃的讨论，如心理学、商业决策或自我评价；日常口语中也可见，但不算高频。
与 overconfidence 完全押韵的词是 confidence 和 self-confidence；diffidence、evidence、providence、residence 等词看似拼写相近，但发音不同。
Dictionary facts from ECDICT, WIKTIONARY.