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displeasure at/with sth
介词 at 后常接事件或行为，with 后常接人或事物。
His displeasure at the decision was obvious.
他对这个决定的不满显而易见。
不悦；不满；生气
先理解核心含义，再看它在真实句子里的用法。
不悦；不满；生气
the feeling of being unhappy, annoyed, or dissatisfied with someone or something
His displeasure at the decision was obvious.
他对这个决定的不满显而易见。
对某事或某人的不满情绪；不满意；不赞成。
A feeling of being displeased with something or someone; dissatisfaction; disapproval.
令人不快的事；恼怒或烦恼的根源；冒犯；伤害。
That which displeases; cause of irritation or annoyance; offence; injury.
失宠或受冷遇的状态。
A state of disgrace or disfavour.
She couldn't hide her displeasure when she saw the broken vase.
看到花瓶碎了，她无法掩饰自己的不满。
The manager expressed his displeasure at the team's poor performance.
经理对团队糟糕的表现表示了不满。
His father's displeasure was obvious when he came home late.
他晚回家时，父亲明显很不高兴。
介词 at 后常接事件或行为，with 后常接人或事物。
His displeasure at the decision was obvious.
他对这个决定的不满显而易见。
voice 比 express 更正式，常用于公开提出不满。
Customers voiced their displeasure about the new policy.
顾客们对新政策表达了不满。
常用 much to sb's displeasure 来强调程度，整个结构作状语。
Much to the manager's displeasure, the report was late.
令经理大为不满的是，报告迟交了。
Not this
I am displeasure with his behavior.
Use this
I am displeased with his behavior.
displeasure 是名词，不能用作表语形容词；表达“不高兴”时应用形容词 displeased。
Not this
She expressed her displeasure to his decision.
Use this
She expressed her displeasure at his decision.
表示“对……不满”时，displeasure 后接 at 或 with，不接 to；这是受汉语“对……”直译影响。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
表示不满
Several customers wrote to express their displeasure with the service.
几位顾客写信表达对服务的不满。
表现出不悦
She showed her displeasure by leaving the meeting early.
她提前离开会议，表现出不悦。
表达不满
Residents voiced their displeasure over the new parking rules.
居民对新停车规定表达了不满。
惹某人不快
He was careful not to incur his manager's displeasure.
他小心避免惹经理不快。
不高兴地
The teacher looked at the noisy class with displeasure.
老师不高兴地看着吵闹的班级。
令某人不快的是
To her displeasure, the package arrived two days late.
令她不快的是，包裹晚了两天才到。
令某人大为不满的是
Much to my displeasure, the meeting was postponed.
令我大为不满的是，会议被推迟了。
招致某人的不满
The manager incurred the staff's displeasure by cutting bonuses.
经理削减奖金，招致了员工的不满。
发泄某人的不满
She vented her displeasure at the poor service.
她对糟糕的服务发泄了自己的不满。
Use displeasure naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆成 dis（否定）+ pleasure（快乐）：不快乐，就是不满、生气。
语域：formal 常见场景：formal writing、official statements、customer service displeasure 比较常见于正式或书面语境，表示“不悦、不满”，语气比 anger 或 annoyance 更克制、更礼貌。通常出现在官方声明、正式信函或礼貌的商务沟通中。
复数形式 displeasures 指具体的令人不满之事；表‘不满’这一情感时通常不可数。
Dictionary facts from ECDICT, WIKTIONARY.