1
maintain / preserve decorum
decorum 在此为不可数名词，表示‘礼貌得体’。
The staff were instructed to maintain decorum during the ceremony.
工作人员被指示在仪式期间保持礼节。
得体；礼貌
先理解核心含义，再看它在真实句子里的用法。
得体；礼貌
Behavior that is polite and socially appropriate; propriety in manners and conduct.
The staff were instructed to maintain decorum during the ceremony.
工作人员被指示在仪式期间保持礼节。
不可数，指总体上的得体行为
适当的社会行为；礼节。
Appropriate social behavior.
举止得体
propriety in manners and conduct
社交行为惯例。
A convention of social behavior.
The students maintained decorum during the principal's speech.
学生们在校长讲话时保持了礼貌得体。
Professional decorum requires employees to dress appropriately for meetings.
职业礼仪要求员工在会议中着装得体。
She handled the disagreement with perfect decorum, never raising her voice.
她以完美的得体态度处理了分歧，从未提高嗓门。
decorum 在此为不可数名词，表示‘礼貌得体’。
The staff were instructed to maintain decorum during the ceremony.
工作人员被指示在仪式期间保持礼节。
She behaved with decorum at the formal dinner.
她在正式晚宴上举止端庄。
It is important to observe decorum in a courtroom.
在法庭上遵守礼仪很重要。
Not this
He decorumed the meeting.
Use this
He maintained decorum at the meeting.
decorum 是名词，不是动词，不能直接加-ed变成过去式。正确的表达是使用动词 maintain 或 observe。
Not this
The room had nice decorum.
Use this
The room had nice decoration.
decorum 指言行举止的礼貌得体，不指装饰。表示装饰应用 decoration。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
社交礼仪；社交得体
She handled the awkward situation with perfect social decorum.
她以得体的社交礼仪处理了这个尴尬的局面。
保持得体；维持礼节
The chair asked everyone to maintain decorum during the debate.
主席要求大家在辩论期间保持礼节。
分寸感；得体意识
His sense of decorum prevents him from asking rude questions.
他的分寸感使他不去问无礼的问题。
遵守礼节；恪守礼仪
Visitors are expected to observe decorum in the temple.
参观者应遵守寺庙的礼仪。
失礼；违背礼节
Laughing at the ceremony was considered a breach of decorum.
在仪式上大笑被认为是一种失礼行为。
Use decorum naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：decorum 里有 decor（装饰），言行得体就像给社交形象做装饰。
语域：formal 常见场景：formal speeches、etiquette manuals、academic writing decorum 是较为正式的词，多用于正式场合或书面语，表示符合社会规范的得体行为；日常口语中较少出现。
forum /ˈfɔrəm/ and quorum /ˈkwɔrəm/ rhyme exactly with decorum /dɪˈkɔrəm/. decor /deɪˈkɔr/ is a lookalike without the final -um; coral, moral, and corpus share the /ɔr/ sound but have different endings and stress, so they do not rhyme.
Dictionary facts from ECDICT, WIKTIONARY.